Malicious PDF — malware analysis report

Static analysis result for SHA-256 190469d90f41f848…

MALICIOUS

PDF

71.5 KB Created: 2021-02-20 05:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 11b5e8568c3fa338f5f060e49fa5245d SHA-1: 1de3ed25e47b96f7198c624fbb01ad803e98c017 SHA-256: 190469d90f41f848f4883b3eca9dfd5275b1eb5c0d04919e0ac45b5c11fc1624
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://baarspo.ru/wix?keyword=panzram+book+pdf+free PDF link annotation
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/7636672.pdfIn PDF document text
    • https://sikafajowed.weebly.com/uploads/1/3/4/7/134757433/zonadoribubowiv_fekuwifik_bezalarir_wixulowox.pdfIn PDF document text
    • https://bojibelatos.weebly.com/uploads/1/3/4/0/134040608/dekijadibaz-tofidepoxedix-duzugusurib-nekejaguselove.pdfIn PDF document text
    • https://tizupokewa.weebly.com/uploads/1/3/4/0/134013062/74021f47ef17.pdfIn PDF document text
    • https://gileledera.weebly.com/uploads/1/3/0/8/130874536/5244799.pdfIn PDF document text
    • https://kuzapulekoxiror.weebly.com/uploads/1/3/2/6/132681507/palubixoko_nexixufot.pdfIn PDF document text
    • https://cdn.sqhk.co/fusatogis/dFijlgf/19745260980.pdfIn PDF document text
    • https://cdn.sqhk.co/bivadudit/jnidhb1/assistant_director_jobs_los_angeles.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/c3hhf28/lukegup.pdfIn PDF document text
    • https://zopokobo.weebly.com/uploads/1/3/1/3/131383813/dd08af83c04.pdfIn PDF document text
    • https://kofitabalu.weebly.com/uploads/1/3/0/7/130775223/6665523.pdfIn PDF document text
    • https://mesasijodise.weebly.com/uploads/1/3/5/3/135315214/matekiwepogogen.pdfIn PDF document text
    • https://xukifunizagopo.weebly.com/uploads/1/3/4/0/134013279/ruwezule-wudininiwuvelug-najenup.pdfIn PDF document text
    • https://fobulosarurek.weebly.com/uploads/1/3/3/9/133997379/tovefonelijunek-bigiwo.pdfIn PDF document text
    • https://rafopovuweke.weebly.com/uploads/1/3/2/7/132740485/zapekatogew-jusorenuwiz-lasifigob-nulemevo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosodesuvivat.epizy.com/davad.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_off0000dc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC81 5232 bytes
SHA-256: 09d312a8484497ef0045354f1758fd40c9b2530f8797ac915f5c157d7a8970e9
font_01_sfnt_off0000ee41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE41 10240 bytes
SHA-256: 9e7fa3adfe08dd4f8a98a750871ddaa4e58b9d83b089637fc44fce26c1b79bdc

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