Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a395674713ac76d…

MALICIOUS

PDF

86.3 KB Created: 2021-02-14 12:03:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1b47ea1461e042a864709c0ba82dba9c SHA-1: 034886058fc4506f5afdb06c633008ec1a89300d SHA-256: 9a395674713ac76d5e60cb3ffd7216c853b15622bf0e3df11c21c52a869ca88a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=peter%20answer%20wikipedia In PDF document text
    • http://azalea.store/nukewukonoehpmm.pdfIn PDF document text
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/nelovarifaruralika.pdfIn PDF document text
    • http://igme.site/coachman_vip_565_manualr95xl.pdfIn PDF document text
    • http://autobuff.xyz/950962021xlhdb.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/3496230.pdfIn PDF document text
    • http://xplaintome.ru/rezixobefapiweminudupeg3n.pdfIn PDF document text
    • https://putonikasobex.weebly.com/uploads/1/3/1/0/131070178/b0102.pdfIn PDF document text
    • http://afracheat7.xyz/tufifupebepogixa70hgm.pdfIn PDF document text
    • http://exclusmxpn.com/86585958557mi067.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450249/normal_5feeec42a3bc8.pdfIn PDF document text
    • http://mkuu.club/fatakiwekine.pdfIn PDF document text
    • http://podarokinsta.online/tipo_de_estudio_descriptivov4c0c.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/tovujazaxifukal.pdfIn PDF document text
    • http://ccckkkkk.space/best_offline_map_of_romejedzg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jefitanebigovun.rf.gd/loworotudasaditixuzimip.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_off000116e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E7 5076 bytes
SHA-256: 960c8a5b678f1bbd0ce1c8d5daa1d4f8e28b47f1406ac06a126540f7108d98e5
font_01_sfnt_off0001284d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284D 10580 bytes
SHA-256: f63270138dfdd33e78b15d5f491f57d63a694b5752beec8f258f6ea813838a64