Malicious PDF — malware analysis report

Static analysis result for SHA-256 b986e0b9b018f246…

MALICIOUS

PDF

72.1 KB Created: 2021-02-10 02:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4a61228903ae08aa9cdb51f15760938f SHA-1: 088d9dd58ea36ad820d8e3b9a5275c54a462b110 SHA-256: b986e0b9b018f2461eabff8b12c511471485028b34fb126a161dd03e6a38622a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=letterman%20font%20template PDF link annotation
    • https://cdn.sqhk.co/xafiguzi/jahgLic/app_locker_with_password_fingerprint_lock_gallery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_60129dc59900b.pdfIn PDF document text
    • https://cdn.sqhk.co/lowilufape/PjelhfI/zowevewitelisilinizexuz.pdfIn PDF document text
    • http://fruitslope.online/ac_dc_greatest_hits_mega0vks5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470027/normal_5fd672437e4f4.pdfIn PDF document text
    • https://jafiwivejo.weebly.com/uploads/1/3/5/3/135305612/begomimol.pdfIn PDF document text
    • http://50off.pro/aadhar_card_form_filling_jobsrmz5f.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/jhRFjg7/81783294646.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/ibZo18a/66565004141.pdfIn PDF document text
    • http://alisaborodaenko.design/meropovunisidikisiko8552h.pdfIn PDF document text
    • http://idclick.cash/xegijulaxamuvorigat7psmi.pdfIn PDF document text
    • http://xtina.online/644245507579g61s.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/lidopo-tavutaziw-tuwenoxuneses-pazopudexusif.pdfIn PDF document text
    • http://leftoutclub.com/college_algebra_5th_edition_beecherkvu6s.pdfIn PDF document text
    • http://car-test.pro/blackmail_patola_dj_songj3wad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF02 4812 bytes
SHA-256: a469149f60821be5bb25078110f56939b385e4308749a92e19fe15dffa65e520
font_01_sfnt_off0000ef4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4E 10788 bytes
SHA-256: 95a7fd75494a664fb0c7d6548ba62a83468e67f7676b1d7446e2f41f4f736335