Malicious PDF — malware analysis report

Static analysis result for SHA-256 c332fd87f5ebbf18…

MALICIOUS

PDF

74.3 KB Created: 2021-03-03 02:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0c2e1d5428b6d2aab014a38d36f93aaf SHA-1: 1e464d09dcaeda92f1ecf321b62d10eea1e26b5e SHA-256: c332fd87f5ebbf18c21d32242533a46a647d632c55baf5cff7bc1f845b423237
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=how+to+connect+apple+tv+to+vizio+sound+bar PDF link annotation
    • https://cdn.sqhk.co/niwexifa/jjciaP9/best_smoothie_blenders_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/hhl5igY/fulinizapobebawuwijajiw.pdfIn PDF document text
    • https://cdn.sqhk.co/fepefudasor/gehfjjj/didasuxix.pdfIn PDF document text
    • https://dijamolilum.weebly.com/uploads/1/3/5/3/135347404/6daace38517628.pdfIn PDF document text
    • https://cdn.sqhk.co/tegiriwepaj/jhbjdgj/82967611778.pdfIn PDF document text
    • https://fepuvagugi.weebly.com/uploads/1/3/4/7/134767339/b98799.pdfIn PDF document text
    • https://cdn.sqhk.co/doxowite/gghg2ge/zakojetusapijorixi.pdfIn PDF document text
    • https://cdn.sqhk.co/jadojibam/DijFJgc/mogud.pdfIn PDF document text
    • https://rerubugamujo.weebly.com/uploads/1/3/1/0/131070567/6456131.pdfIn PDF document text
    • http://immortal-sho.club/68894145683jso78.pdfIn PDF document text
    • https://sirawosoze.weebly.com/uploads/1/3/0/7/130776152/3a0895224f173.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418583/normal_6001d99e29bfe.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/jdpWhdc/download_game_rocket_royale_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guruwemuzotal.epizy.com/bilingual_education_research_paper.pdfIn PDF document text
    • http://wemojeduxikuzem.rf.gd/91079093188.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_off0000e580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE580 5368 bytes
SHA-256: 8abb55d571712d37bc2febee52c0097d72086b7bd978ad87e45fff9cc1e25a1b
font_01_sfnt_off0000f7e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E7 10684 bytes
SHA-256: ba821e9790505ffad3db22e38faf3b7b67bb80b22924542fe555250677a1f806