Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e52d6f48d8a2ee7…

MALICIOUS

PDF

67.8 KB Created: 2021-01-29 14:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 5ca4657f330851068973e98de9b7ea8d SHA-1: 2e1b412c6ab7eb5af3e9fb7dc44f6cd0860b6198 SHA-256: 8e52d6f48d8a2ee768abfc9f606013c1139df355482d32da68fed2e7910420a3
186 Risk Score

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 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.
  • 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://trafffi.ru/wb?keyword=flight%20pilot%20simulator%203d%20play%20online PDF link annotation
    • https://cdn.sqhk.co/lojosexotak/je1xhgD/nofedasarawu.pdfIn PDF document text
    • https://vajunepiw.weebly.com/uploads/1/3/2/6/132681590/sijizowijud.pdfIn PDF document text
    • https://cdn.sqhk.co/beratinuga/WoOhdeK/82664111990.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/hVieFid/85653947550.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501632/normal_5fdfd4d973e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5fd7a6aba5576.pdfIn PDF document text
    • https://rogenogenitel.weebly.com/uploads/1/3/4/3/134316557/7664490.pdfIn PDF document text
    • http://academic-club.ru/spanish_practice_worksheetsqubl6.pdfIn PDF document text
    • https://bagerukuvimi.weebly.com/uploads/1/3/2/8/132815916/wedanaginumutijun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415534/normal_5febea2e842c2.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/hGhiLic/pitozozibowewibabir.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/jgihggi/46128703631.pdfIn PDF document text
    • https://feroxetisilujux.weebly.com/uploads/1/3/1/4/131409167/3132136.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/ziguvusexerozuje.pdfIn PDF document text
    • https://cdn.sqhk.co/jikikavadaja/jNXjbjj/51899398425.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD82 5592 bytes
SHA-256: 907373f5f3f60cba4826b6321e4109c299f2bc3ecb3d3f5c9e574f740a0f2710
font_01_sfnt_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 9912 bytes
SHA-256: 9fed81810cd673b2e1728de22f1d49b4213bee294577acfd294bdb5456f85552