Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ace73748a424fb5…

MALICIOUS

PDF

70.1 KB Created: 2021-03-02 03:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b5cb8cf6ef7c8dd86366817a30881c99 SHA-1: c99a817b3004956ea61d0f8fa72076521c55066d SHA-256: 3ace73748a424fb540c751c4d9070d8d02e4a0fe4f96e3d8aa543916858d0e9a
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://xajibur.ru/award?keyword=vector+calculus+marsden+solutions+pdf PDF link annotation
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/rijizapetabub-wafixex-moxezipakas-juzusoloredufom.pdfIn PDF document text
    • http://damvglaz0.xyz/624423510782oydg.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxikinanibu/SGlbV0S/19822645354.pdfIn PDF document text
    • https://rudixesawemes.weebly.com/uploads/1/3/1/1/131163949/46e32f1384bb9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386595/normal_5feb27f589fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_5fd630907e02c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403428/normal_6015470f5de16.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/6011546.pdfIn PDF document text
    • https://rubopawine.weebly.com/uploads/1/3/1/0/131070645/8166362.pdfIn PDF document text
    • http://italia-doc.space/bloc_quebecois_2019_election_platformvftjh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444102/normal_5fe31a74bb5d6.pdfIn PDF document text
    • https://fatuzolawodazu.weebly.com/uploads/1/3/4/7/134730183/levotanotodukal-bunaferukadusu.pdfIn PDF document text
    • http://lnstagramoriginal.com/50721848050a75xi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_60148834cb1d8.pdfIn PDF document text
    • https://siresikewutawin.weebly.com/uploads/1/3/0/7/130739490/9933395.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/daselex/91666651086.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/esquema_sobre_el_sistema_endocrino.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/ihk_berichtsheft_bayern.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_off0000d6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B9 5264 bytes
SHA-256: 17213d221a733bc5f69048a0f691f2566eab67a588262af14c99626be0fd2af7
font_01_sfnt_off0000e88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88F 10184 bytes
SHA-256: f2c99dc1b4d59fa651aeca570e48219cbd073557070c5f418d14e55b20e1e15a