Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab199e77534c0a0…

MALICIOUS

PDF

69.6 KB Created: 2021-02-10 18:49:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8809b311a5fc2b87fccffb1e21dcec52 SHA-1: 10f8dd39bb8b27e4628070f0b21db5c3a08ac176 SHA-256: 8ab199e77534c0a006b8d6e61a35a28f3724ca80d05fdf3cb02e1787f8654459
134 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 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://druttle.ru/wb?keyword=android%20file%20transfer%20driver%20for%20windows%2010 PDF link annotation
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/palawig.pdfIn PDF document text
    • http://voxamuzovo.22web.org/98897164470.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/ichbgfw/budubopilijaloxaw.pdfIn PDF document text
    • http://procripton.com/zutujepadibixurojenavh59iu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366395/normal_5fce5de762919.pdfIn PDF document text
    • http://nukicew.xyz/wodumakexutavowuvomokj4up4.pdfIn PDF document text
    • https://dajepulexito.weebly.com/uploads/1/3/4/5/134591334/8da8df2145b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452381/normal_60164f547c931.pdfIn PDF document text
    • https://cdn.sqhk.co/womalakifaxa/YVkgcgg/30743911684.pdfIn PDF document text
    • http://vukabuv.22web.org/buxigud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://punegejofuj.epizy.com/mezarud.pdfIn PDF document text
    • http://matufuw.rf.gd/fovopokebikexitovuzeg.pdfIn PDF document text
    • http://momugegunimex.rf.gd/kivukelitoxubunikewina.pdfIn PDF document text
    • http://natexekazedap.epizy.com/bose_quietcomfort_35_wireless_manual.pdfIn PDF document text
    • http://pamakejexo.epizy.com/5295728174.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_off0000d1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F7 5236 bytes
SHA-256: 465c019ee6574cb8dcd61472222722dfbf4428e8bd01915ef6aa8a8566ccfb45
font_01_sfnt_off0000e3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F0 11228 bytes
SHA-256: 7993c24c4d682a78824070b086186aa5c915e8f27bfa2bf88e67f5d9ecef64a7