Malicious PDF — malware analysis report

Static analysis result for SHA-256 66722bce8b9d3ee1…

MALICIOUS

PDF

77.2 KB Created: 2021-02-09 11:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a1ec10728dda8f1d4533c746093dbe6 SHA-1: 190fa8d8bd65ef6235c53488e00a0d6959829bca SHA-256: 66722bce8b9d3ee1c28f8e450a5505f134da6815793167f098ef2618d2404cb2
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/aws?utm_term=bhojpuri+video+song+dj++2016 PDF link annotation
    • http://sobakin.space/palliative_care_guidelines_nicecuzuy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470698/normal_6011206a1ab71.pdfIn PDF document text
    • https://noduxulab.weebly.com/uploads/1/3/4/9/134901810/b2311b556192.pdfIn PDF document text
    • https://dimalosuzilem.weebly.com/uploads/1/3/1/4/131452887/xerume.pdfIn PDF document text
    • http://vovality.club/minecraft_cape_skin_packzezd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479674/normal_60110d0e0e47c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5ffe5204028bb.pdfIn PDF document text
    • http://academic-club.ru/best_caption_and_status_2020pgd52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370737/normal_600ea3fb5ea53.pdfIn PDF document text
    • https://befunopokoxa.weebly.com/uploads/1/3/5/3/135327779/pibaxagerelosi.pdfIn PDF document text
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/ropazipisokesegik.pdfIn PDF document text
    • http://trixy-matrix.space/neduxibapedogixisejotgodns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5fc8540b94349.pdfIn PDF document text
    • http://osmosiotzs.fun/2018_can_am_defender_hd8_service_manual8l4yi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogivumomu.epizy.com/68869738281.pdfIn PDF document text
    • http://texaliborobiko.epizy.com/31399663694.pdfIn PDF document text
    • http://nuzowudip.rf.gd/tp_link_ac1200_archer_vr300_manual.pdfIn PDF document text
    • http://nosikugabuvisal.epizy.com/niall_horan_flicker_full_album.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_off0000ee7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7F 5644 bytes
SHA-256: 617fa64ddb5ef378e2f009fef23d2a2f10072006233e05437f6766463dbb8880
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 11288 bytes
SHA-256: f6d787a6fff949ca608a38e35ae29c6a25c3b55801a073e13fa61a03e9db7df9