Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9be706ebad771f…

MALICIOUS

PDF

73.6 KB Created: 2021-06-01 18:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6d5d0be2539d26f810cabc1d45957f6 SHA-1: 0f676b9db250edeb29d495ba4a483ebc15f4245d SHA-256: 3d9be706ebad771f4800a79c9cc6629836b7b0ea1dacd49332acf5fb1ae4d24a
134 Risk Score

Malware Insights

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

The PDF contains a high-confidence ML detection and ClamAV signature for phishing/malware. It also includes heuristics indicating it's a link farm on disposable hosting, with a visual download button lure. The embedded URL `https://fokemale.ru/123?utm_term=best+2018+pc+games` is the primary indicator of a malicious redirection or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/123?utm_term=best+2018+pc+games
    • https://cdn-cms.f-static.net/uploads/4425760/normal_604dd6d38e652.pdf
    • https://static.s123-cdn-static.com/uploads/4427268/normal_5fd04948da6bf.pdf
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/xosok.pdf
    • https://legovizadedugid.weebly.com/uploads/1/3/1/8/131856283/jebisirefefaz-jimuz.pdf
    • https://cdn-cms.f-static.net/uploads/4476582/normal_602e3045b4946.pdf
    • https://cdn-cms.f-static.net/uploads/4379605/normal_601b52b893f13.pdf
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/64ac0.pdf
    • https://bubawupuga.weebly.com/uploads/1/3/4/3/134380130/e406fc131a9a0.pdf
    • https://cdn-cms.f-static.net/uploads/4506131/normal_604eb92ac11e4.pdf
    • https://kololeranazi.weebly.com/uploads/1/3/4/5/134583506/mitidopilidoj.pdf
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/gotuwaxuxuxus.pdf
    • https://cdn-cms.f-static.net/uploads/4387933/normal_604a29ae3e733.pdf
    • https://doxeraja.weebly.com/uploads/1/3/1/8/131871607/mesode.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jetipufagi.pbworks.com/w/file/fetch/144470655/zidunamilomatudexewafuwe.pdf
    • http://tusawijer.pbworks.com/w/file/fetch/144460362/61141960494.pdf
    • http://savavaze.pbworks.com/w/file/fetch/144453738/minecraft_pe_mod_menu_android.pdf
    • http://pagorevet.pbworks.com/w/file/fetch/144448020/mavugugulopoja.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e14d.bin
fd8eed41b5eb99ffa816c1229d939d6487b134774580b2023d89aa620d48e976		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE14D 5696 bytes
font_01_sfnt_off0000f4b0.bin
dfeb7e2161c5139f4c7f5532d8ee01802307aa13c9ce7954e09a160b119e3236		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 10912 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.