Malicious PDF — malware analysis report

Static analysis result for SHA-256 805cb064f681ed8a…

MALICIOUS

PDF

164.7 KB Created: 2021-05-27 21:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7f33d65d7faadd1c7bc81d3a4831e017 SHA-1: 82fbd9e3b5262caf4dea093f202f8907b8dffb6b SHA-256: 805cb064f681ed8a9973bec7febd8fccb7c6c0cffc7a05312b2036781530a13c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9305

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 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.
  • 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://nipisod.ru/123?utm_term=learn+hindu+astrology+pdf PDF link annotation
    • https://leloturopuroka.weebly.com/uploads/1/3/5/9/135956930/vukijelegode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464709/normal_60602a0927d36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457281/normal_60483608c5380.pdfIn PDF document text
    • https://xewezepi.weebly.com/uploads/1/3/0/8/130813550/3634302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384825/normal_60444b133eb51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_6044d1d89f756.pdfIn PDF document text
    • https://labiduto.weebly.com/uploads/1/3/4/5/134584073/6a4086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_6023f7e86b60c.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4494440/normal_60afe67f2c26b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5fff16777b49f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387709/normal_5ff614da1091f.pdfIn PDF document text
    • https://tokitojunetibot.weebly.com/uploads/1/3/4/2/134265352/9889357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5ff9b44681d35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403271/normal_5fd6414363d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_6061e68ca96c4.pdfIn 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://uploads.strikinglycdn.com/files/dabd35c7-4aaa-482b-a5fb-3067a6da9417/how_to_origami_butterfly_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b334a3-4e89-4800-b0ff-4cadd7df10cb/bejuzonujozekoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31af3ffd-a4e4-486b-91d5-ec7b759d72d6/56910433478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc23cb8-35e9-4d24-aa47-e3ae478599f9/the_coldest_place_in_the_usa.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://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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001d2f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D2F3 7912 bytes
SHA-256: a5d1aba44d6d09f763e0682586a80d1c4311c9b66325c428431cbcba13105ad0
font_00_sfnt_off00017cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CBB 5348 bytes
SHA-256: 5f583f681d885d1c4215a82a2b5ea1fa057a1e40e30151a244182dbcba33d545
font_01_sfnt_off00018ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18EF0 7136 bytes
SHA-256: 5991ed1466bce351fe2dee695d7297204118495424df737e39e5fe90dfe55157
font_02_sfnt_off0001a308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A308 7196 bytes
SHA-256: 7b9aa660288331624f2468c4469bc683ab32fccf4d1d7afe470c08ed2dc9e495
font_03_sfnt_off0001bac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAC1 6780 bytes
SHA-256: c029445340496896e215ee6322107ab47f3fe5758b085d0e450145d4b05468d8
font_05_sfnt_off0001e9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E9A4 5092 bytes
SHA-256: 7ad629a594f34ff327dd23b7f5b9a6db8fff7be1b1e54c34cc5c10f8183c1141
font_06_sfnt_off0001fc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC44 8948 bytes
SHA-256: 2a2c8be82e75c9cd721d55fe6d8a1ce127058c80c29dfafbf094720c561c97d6
font_07_sfnt_off000215e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x215E5 6588 bytes
SHA-256: 6b459bbc29dca8034cc8484148bac91dbf048438d926bcb3d21e7efaca3db240
font_08_sfnt_off00022b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B5B 14620 bytes
SHA-256: 6ab26034ce38b901dd537590ae877e0a394299125ec13dc33b321c210088de47
font_09_sfnt_off000257a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x257A9 6040 bytes
SHA-256: bbe087376bf89c646957f92e70683333496805d69d2bd687f60a33887cbd4a59
font_10_sfnt_off00026cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26CEF 6008 bytes
SHA-256: 3dc150515c142e9f13a4c38f125a8672f063633e2dec02fc83c7688824b527bc

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