Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd13aa3ca4361a28…

MALICIOUS

PDF

72.6 KB Created: 2021-03-02 12:53:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b14512dc5935ac6c2f4faee8c0d7cbed SHA-1: 740394dabc91a59bb065a3139864f0d742aeb4cf SHA-256: dd13aa3ca4361a2839e0dbec7483c802f4755abc8ca1ff6862b52c7d0780aa62
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=story+of+icarus+moral PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418379/normal_60216dd46db95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450244/normal_600449a061277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_603d420f613ec.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/ifmjahe/woodworking_classes_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453732/normal_602fbe1d22c0a.pdfIn PDF document text
    • http://moxegelubopidi.sportsontheweb.net/letter_of_intent_for_turkey_scholarship_sample.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501385/normal_6032aa2bf2766.pdfIn PDF document text
    • http://podeves.xyz/46525750793n0lx.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/vezumobigodub/kujiwixemevuwonenig.pdfIn PDF document text
    • http://genenapukiral.epizy.com/batman_vs_superman_extended_cut_parents_guide.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/73018653918.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/dental_benefits_for_veterans_fact_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/50252603700.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_off0000e201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 5232 bytes
SHA-256: 7d5791c7c8aab81b0885f925f6798c5bd1747abaed1831e95493d76fa6eedf56
font_01_sfnt_off0000f3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C0 10064 bytes
SHA-256: 4e15c8086c0c9c8a02c4db608ba292c49b853f96161a6b680f58147dd0d59946