Malicious PDF — malware analysis report

Static analysis result for SHA-256 350163d3ff9eb90b…

MALICIOUS

PDF

75.0 KB Created: 2021-03-02 23:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cf05af3879889b4a181ab0d3af2f4414 SHA-1: 8a6d45bcecb11dd500ccfd943aabef626b681c23 SHA-256: 350163d3ff9eb90ba24b92a0a5d212ef4dadf6013b2db1148824c922c1451388
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://seumenha.ru/award?keyword=explique+como+acontece+o+ciclo+de+krebs PDF link annotation
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/3254923.pdfIn PDF document text
    • http://tojumuwuluso.iblogger.org/hereditary_angioedema_guidelines_uk.pdfIn PDF document text
    • http://tipografiyav.moscow/brochure_flyer_design_template_freem81jl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489844/normal_601d5ec15b052.pdfIn PDF document text
    • https://cdn.sqhk.co/miwizawi/ghgnihY/dream_piano_mod_apk_unlimited_money_and_energy.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/gijolesib.pdfIn PDF document text
    • https://botakukejase.weebly.com/uploads/1/3/4/6/134610266/0f7ac33772291c.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/xemavalajiwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_603b23d0126cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_601ba80ba0947.pdfIn PDF document text
    • http://zubosoxi.22web.org/40991709805.pdfIn PDF document text
    • http://dietnatur.fun/wuwovorabupugizupimuniziamboi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369932/normal_5ff719f8d2615.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nazonuretowu.epizy.com/16842773205.pdfIn PDF document text
    • http://durakukulutozar.epizy.com/how_to_take_lens_off_mamiya_rb67.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_off0000e3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DE 5576 bytes
SHA-256: 0c1b6c8de16377ccba18b6dc8a04afa10b06c2d631f6f7b3e4022c4917bfd11d
font_01_sfnt_off0000f6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B4 12716 bytes
SHA-256: 1712aa1062d14c5737a44820128a7ad18f4805787b343a4311dc8b605ba0527a