Malicious PDF — malware analysis report

Static analysis result for SHA-256 6393a6138c4db0ca…

MALICIOUS

PDF

70.5 KB Created: 2021-02-21 07:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cc12ff86075706e4b3cfc44c9271c56a SHA-1: b7f7838f7d772330038b005333d903343f1abbd9 SHA-256: 6393a6138c4db0cac21272fa78ae5ccf972916f837671ed462f7dbf438d2f0bf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/wb?keyword=relative%20clauses%20exercises%20advanced%20with%20answers PDF link annotation
    • http://swiss-gear.shop/wiposfdgwi.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/KhfNZgg/93015377145.pdfIn PDF document text
    • http://vezdesami.ru/nadokefimisevoxirosa00qtf.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/ihczzhh/63284585263.pdfIn PDF document text
    • http://kzrovk.xyz/typewriting_practice_book_free_downloadkfg97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_5fe9bb36a57c5.pdfIn PDF document text
    • https://vuzidupujesezo.weebly.com/uploads/1/3/1/3/131398219/9739711.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/jakHjed/vevulijadabiloxukukafoxim.pdfIn PDF document text
    • https://sozefusezat.weebly.com/uploads/1/3/4/8/134860931/donim-fawiruf-fejejube.pdfIn PDF document text
    • http://whysmall.space/harris_matchless_g80_performance6arou.pdfIn PDF document text
    • http://ro-shop.space/mabenujasuzwgabx.pdfIn PDF document text
    • https://gajatizu.weebly.com/uploads/1/3/5/3/135315297/9342218.pdfIn PDF document text
    • https://mobinefoju.weebly.com/uploads/1/3/1/3/131398425/5354b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491723/normal_6014c436b9494.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/dikobepibelun/aux_champs_elysees_paroles.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_off0000d56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56B 5256 bytes
SHA-256: 78025231378485ca8bc344498991d4edbd52fdcd5cbfff12a68b36ca0c3953cd
font_01_sfnt_off0000e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75D 11052 bytes
SHA-256: df293fd1c652d008e3d0a64fcebaba335c358c522628d46d4d405263a3192993