Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd94cf997f547ae0…

MALICIOUS

PDF

74.0 KB Created: 2021-02-22 19:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d723b559b95052598a38810680318a51 SHA-1: 3334cf612ba214cdec3507f0a2c4043bbb690b75 SHA-256: cd94cf997f547ae02fdd3de557bf0f92b8c6f5137b5486f8deb971fea1557246
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://seumenha.ru/123?utm_term=inquisitormaster+can+you+keep+a+secret+playlist PDF link annotation
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/xarozelizos.pdfIn PDF document text
    • https://xomuxojevasew.weebly.com/uploads/1/3/4/0/134096468/bavurobeve_tatefo_godivowidemub_dupik.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/gfyhihd/bhop_pro_mod_apk_1._7._4_download.pdfIn PDF document text
    • https://kogozodibivuf.weebly.com/uploads/1/3/6/0/136094397/gupupile.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/ievcy2w/16388212129.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/lifgisJ/avakin_life_3d_virtual_world_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425214/normal_6014a4d8d9890.pdfIn PDF document text
    • http://barberking.best/pumuxapasoyi442.pdfIn PDF document text
    • https://sozejaras.weebly.com/uploads/1/3/2/6/132695734/laxejofabi.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/3t5megi/kelajosenipifawetaxepubex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_600e316f056bd.pdfIn PDF document text
    • https://gevexewu.weebly.com/uploads/1/3/4/0/134018209/521b63b22.pdfIn PDF document text
    • http://naykaryadom.fun/jekepabusasadizokauf6o7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379474/normal_5fe1ed3376b24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vojapu/lg_tromm_washer_fault_codes.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A3 5308 bytes
SHA-256: e415b19ee7270d185eb0248449e9ad93def60a58d0c4712790955fab4b09e264
font_01_sfnt_off0000f7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AC 10240 bytes
SHA-256: 24717c4bad41e9a3eb9f65e00bfbb486930066af8c2a9fe5d4ecfd5ff4c35be3