Malicious PDF — malware analysis report

Static analysis result for SHA-256 3286f15e2b268279…

MALICIOUS

PDF

79.4 KB Created: 2021-03-12 17:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b15feda4d18be9ba9660cb17e5a98f49 SHA-1: e496dcb366a557702331d288cc423e136181e9f4 SHA-256: 3286f15e2b2682796e8fb75828beb3b255be51034e8d55de266b387ad2cecf9b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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://baarspo.ru/strik?utm_term=dyson+animal+dc25+replacement+parts PDF link annotation
    • https://gidafefutor.weebly.com/uploads/1/3/4/0/134040883/rujazo_timadusomed.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/hbzGgfo/boss_fight_game_studio.pdfIn PDF document text
    • https://dedidolijara.weebly.com/uploads/1/3/4/6/134666782/d42dc2.pdfIn PDF document text
    • https://zumokijux.weebly.com/uploads/1/3/5/9/135966910/debeworele-kepupejobavul-kebozosori.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/1423049.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/9BidLwu/cookie_monster_race_car_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/jghKiif/hori_tactical_assault_commander_pro_m2_review.pdfIn PDF document text
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/rujewufa_werif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_55d71e005f714d1fae5518097c19c2f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/zibupoxazenitubo.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/duwatogugixemor.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/ar_name_wallpaper_free.pdfIn PDF document text
    • https://7fd92c66-d3af-485c-b7a9-31529ddfb1b5.filesusr.com/ugd/997d0f_5baa525efd144515a189774d30ebadf5.pdf?index=trueIn PDF document text
    • https://02314edc-d025-420b-9d62-795437f25c47.filesusr.com/ugd/4f0fc1_d7e1fd2513e2494699c7fd82e500045f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7517f559-9ed5-4295-bd5f-c4be969eff4b/fevetujulojulama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d75cd62e-39fb-4dcd-99c6-e3141232de7c/5625210469.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/jamufezodexi.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_5685b3e8e028449e9cb3baefbb2bfb83.pdf?index=trueIn PDF document text
    • https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_5faf59a2bd584b1ba13fe069052adaaf.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5576 bytes
SHA-256: 784a31ba2da55124fd8a10b60e72f53e686c888fd29d55d1552306e4092822fb
font_01_sfnt_off000102fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FA 12644 bytes
SHA-256: 6c32f7dd93e36c23e35783181559ee2e2a450859c26f3b6d1a191e51b8e5b3ec

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