Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f2cc9591980eb7…

MALICIOUS

PDF

145.2 KB Created: 2021-05-20 03:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b64d31dd8cad3997322739ff63105a13 SHA-1: 0ab51c742fe9eb7fce6af814253dda253b479d00 SHA-256: 53f2cc9591980eb781e1eb73a852d261170c16e989c237d494921870dbe44bf9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, indicating a link farm designed to redirect users to potentially harmful websites. The primary malicious URL identified is https://jumiwimov.ru/strik. No scripts were extracted, but the PDF structure and link farm suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8749

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jumiwimov.ru/strik?utm_term=organizational+theory+and+design+%25283rd+canadian+ed%2529 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402507/normal_60601e4e63222.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505687/normal_5fef103ff1856.pdfIn PDF document text
    • https://namuxewanazojo.weebly.com/uploads/1/3/4/2/134266474/212c0cc2a.pdfIn PDF document text
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/6ecc83b787.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fdcd3d5a7e44.pdfIn PDF document text
    • https://jujuguzifise.weebly.com/uploads/1/3/5/2/135299578/minuwutiwitofes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470982/normal_604b67926894a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_60329c420f50e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_60560be9a0098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_602656afe0f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454807/normal_6033f58625c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449602/normal_601db0fc292f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459060/normal_5fe1f18828fe4.pdfIn PDF document text
    • https://wufevepawupaxit.weebly.com/uploads/1/3/5/3/135391440/9117ce2bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d017f4f-0563-4a02-8b99-c6f00d541796/what_types_of_intermolecular_forces_are_found_in_ccl4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/324db173-4ae6-4afc-a4a2-1125017587d8/jesus_message_in_tamil_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7713aea4-7332-4140-bec9-c9a717fa2864/kusajexunepomibolozepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7439e8ad-3c68-4734-95b0-e3c053a04bc8/sanyo_55_inch_tv_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab3a7351-4518-4f45-b9cc-ad33ca5f21e8/rufokid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31cfa385-733b-4ee2-82e6-ba49d3edd6a0/dtv_ii_kohler_shower_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6eda45-7dc4-4191-b130-bcb7ab3d2a71/gotuvebikuru.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn 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/gpl.htmlIn PDF document text
    +1 more URL(s)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 17

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_016_off0001f0ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F0AE 19380 bytes
SHA-256: 511f24356c9cfa0cb561270164dcd905744b8cc3c392e109a9c132e7eb49662d
font_00_sfnt_off00010021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10021 7916 bytes
SHA-256: e679725072c74ab1de830ba6dd25101ec2f6d7be962e72d99a133184e56e62d0
font_01_sfnt_off00011481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11481 6484 bytes
SHA-256: c83fd9d1b431f7b9dc5f903d49d0aecfddc282b3a5950cb10d6ab18e6e767f35
font_02_sfnt_off00012ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE5 5696 bytes
SHA-256: 8314cb0b16d96238103bedf16c913f200ed042f2afdee2a28229531168e04bd4
font_03_sfnt_off00013e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5A 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_04_sfnt_off0001495e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1495E 4140 bytes
SHA-256: fbdd9df555c8710fa493947bde41d1b30e4b750f457ece442df516a7dd53c510
font_05_sfnt_off0001567a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1567A 3048 bytes
SHA-256: 4bb619f7e4c8d10c6650d66271e6db770d7def95493d885be3efe54e7c100c22
font_06_sfnt_off00016282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16282 4544 bytes
SHA-256: 8de763cc392d555d6555ce28e49a7801ce7361977d5c0c1f0cca23967a7df2d1
font_07_sfnt_off0001708c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1708C 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_08_sfnt_off00017b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B4A 2604 bytes
SHA-256: 7f3a1ef136f36ba68bc36e5bcd31de243dce7f4b60e01c4bc40f508baeb48ca0
font_09_sfnt_off0001866d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1866D 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_10_sfnt_off0001900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1900D 3840 bytes
SHA-256: cca5298ad2e89ab0d41cc63a8205340d9321530172a8d5dda1c28d17fa56adaa
font_11_sfnt_off00019e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E25 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_12_sfnt_off0001abc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABC5 6148 bytes
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157
font_13_sfnt_off0001bbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBB0 18736 bytes
SHA-256: 69e29e2ff473063fc0aece540e15df97867ee1b617b6725b1b35541e63e100f0
font_15_sfnt_off0002121d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2121D 3612 bytes
SHA-256: e6a127d4807db9283a7accf384a78a2b0e3b5516854c6cc3c0883f933369f6f8
font_16_sfnt_off0002203c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2203C 4216 bytes
SHA-256: f2ee77ef46d574326e15e5d832115933ac9a59561f08735e614fb36f91e87993

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