Malicious PDF — malware analysis report

Static analysis result for SHA-256 0208ee681f0e47b9…

MALICIOUS

PDF

152.8 KB Created: 2021-04-05 01:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d73c5ab6cf666e790aed67739396b881 SHA-1: 66adcbabaa5398ca08c1c63210c355f1f1c1ae65 SHA-256: 0208ee681f0e47b94de774976baafb923499d263e27133de8ae0c63d9aecab36
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'dafemum.ru'. This indicates an attempt to lure the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest a phishing or malware delivery attempt, aligning with the 'Spearphishing Attachment' technique. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9415

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/wix?keyword=d%2526d+5th+edition+warlock+spell+slots In PDF document text
    • https://s3.amazonaws.com/pululusodogi/gitlab_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465719/normal_60623058e5801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_6028e358318d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461250/normal_601968d915897.pdfIn PDF document text
    • http://shop-profildoors.ru/foursquare_restaurant_guideuwtys.pdfIn PDF document text
    • https://cdn.sqhk.co/xurakipigub/ghD1jeY/32851574898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459175/normal_60539b3a5b70e.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/H2cVmgf/34862764176.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/pVPigFz/bowugigixudupejixe.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/noxusaxofotaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372354/normal_6006a9f932853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_601d29fa2cdb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464710/normal_6029fe1a1ee8d.pdfIn PDF document text
    • http://geleostone.online/gajefunoxoretzrave.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_5999feeb8a43490bb290004a4afa62d1.pdf?index=trueIn PDF document text
    • https://2061f665-9309-41a6-981d-137229ee7e60.filesusr.com/ugd/eb2fe6_6d07d30d7fe241bcb9b64d21e67d0911.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text
    • http://scripts.sil.orgIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 19

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off000181c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x181C9 6504 bytes
SHA-256: 86080a04ebd78c763bf26cb6368b1a231e23f9dd80b9fbcaa967b2208a50f933
stream_011_off0001a9d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A9D6 19776 bytes
SHA-256: 18f1a189c9e0fbe46870cb35829c86c286a22b9ee609be89bc057b312a2a4be4
font_00_sfnt_off0000f134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF134 6148 bytes
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157
font_01_sfnt_off00010116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10116 3612 bytes
SHA-256: e6a127d4807db9283a7accf384a78a2b0e3b5516854c6cc3c0883f933369f6f8
font_02_sfnt_off00010f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2C 24796 bytes
SHA-256: ba7354fa82551d38ed322962d81d1a12f1eeee64c4798b123f458a9f169bfa4d
font_03_sfnt_off000151b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151B2 4156 bytes
SHA-256: bb1702a9e9b617346157f9ea6f36cc14559c37d4a4a2cf683ebd57dce9d2c082
font_04_sfnt_off00015fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FE0 2604 bytes
SHA-256: 7f3a1ef136f36ba68bc36e5bcd31de243dce7f4b60e01c4bc40f508baeb48ca0
font_05_sfnt_off00016af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AF2 3048 bytes
SHA-256: 4bb619f7e4c8d10c6650d66271e6db770d7def95493d885be3efe54e7c100c22
font_06_sfnt_off000176fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176FE 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_08_sfnt_off00019269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19269 6808 bytes
SHA-256: 672d1efc44e3d7ddab03b8f0346a09fd5affce173a981db1e8b5be999da4262c
font_10_sfnt_off0001cc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC82 6280 bytes
SHA-256: 06620024b44374a83b8c1884f59b4bec392d08253552662d24842b9828248703
font_11_sfnt_off0001dbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DBF3 4140 bytes
SHA-256: fbdd9df555c8710fa493947bde41d1b30e4b750f457ece442df516a7dd53c510
font_12_sfnt_off0001e8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E8E2 3840 bytes
SHA-256: cca5298ad2e89ab0d41cc63a8205340d9321530172a8d5dda1c28d17fa56adaa
font_13_sfnt_off0001f6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F6F4 4544 bytes
SHA-256: 8de763cc392d555d6555ce28e49a7801ce7361977d5c0c1f0cca23967a7df2d1
font_14_sfnt_off00020506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20506 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_15_sfnt_off00020ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20EE5 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_16_sfnt_off00021c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C8F 4216 bytes
SHA-256: f2ee77ef46d574326e15e5d832115933ac9a59561f08735e614fb36f91e87993
font_17_sfnt_off00022a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22A4B 9084 bytes
SHA-256: d00a509f774e19b3e0a4814b00695b25c18a7c818840badce060c37437b11e73
font_18_sfnt_off000242bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x242BF 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f

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