Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7851d7af00d7c0f…

MALICIOUS

PDF

65.9 KB Created: 2021-03-04 01:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1e2ad5cc49adaa61100ada0f9774fc8d SHA-1: c833621ce54d22416cfe1fbba9849a8dce1027d0 SHA-256: f7851d7af00d7c0f2f7563ea65aba669aa9a3f360238435186e116fde155eeba
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://leonvi.ru/aws?utm_term=how+to+get+a+seminary+degree+for+free PDF link annotation
    • https://cdn.sqhk.co/raxasumo/87LwHXK/mumaxugifebilijetemodi.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/blue_jackets_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/lakagifoter/hvJiikl/superhero_creator_free_online_unblocked.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/90772943466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_600bbbb6d730d.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/nofivavix.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/iehegh9/kijemoruwatobeneranu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xafonabikox.rf.gd/xukejur.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/theory_u_book.pdfIn PDF document text
    • http://ditinalozevid.epizy.com/addison_wesley_math_makes_sense_5_answers.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/23949209958.pdfIn PDF document text
    • http://mulumibapetemom.epizy.com/female_swimmers_body_transformation.pdfIn PDF document text
    • http://xupuwineris.epizy.com/bihure_logon_bengali_song.pdfIn PDF document text
    • http://rupevapunalude.rf.gd/woneputesijuzureperot.pdfIn PDF document text
    • http://zewebuguv.epizy.com/foxamigobojivaxuxogufapu.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_off0000c673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC673 5348 bytes
SHA-256: a00a01c46644a3995ac330dbf7eccb2d20048d78e8ce3f29660529e87eb93a3d
font_01_sfnt_off0000d8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A9 9976 bytes
SHA-256: e2905257d9164a3c28aaa47da9f5ab57b7cf97a92591a408bc7a2c5f8731dfdf