Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f79c99d46a8002…

MALICIOUS

PDF

70.2 KB Created: 2021-02-23 02:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0d96cd776443cdd78b5105bef87825bc SHA-1: a702c6334517e420fc69c59862757087db575598 SHA-256: b2f79c99d46a80021f7c983ce29773dbf9bca9e71d9ee6c37f45017f4aa978b1
126 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
  • 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://maypoin.ru/wix?keyword=tcss+classification+study+guide+answer+key PDF link annotation
    • http://heleogose.online/ladatulibupipighkpt6.pdfIn PDF document text
    • http://raisinshub.club/88887622545ozqez.pdfIn PDF document text
    • http://lighttravel-ng.com/496243888446evj7.pdfIn PDF document text
    • http://cooldomen.space/3577485691qs56g.pdfIn PDF document text
    • http://classkaod.ru/womadalasozowejotatujudyh97v.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/47143872875bycbn.pdfIn PDF document text
    • http://lnstagramsecurity.net/15123969296t19oe.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/didicre/50631042655.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/darugosazexutijutow.pdfIn PDF document text
    • http://filfex.ru/jemosozuforugixodimwkoy.pdfIn PDF document text
    • https://cdn.sqhk.co/romumoxoleno/c5qtFhi/fezegegunevemoleladu.pdfIn PDF document text
    • http://sfr-espace.best/porazebanodokumikizotediqtd1q.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/cCa3NEt/49860477106.pdfIn PDF document text
    • http://trokot-new.online/basic_music_theory_test_questionso7npw.pdfIn PDF document text
    • http://urolog.xyz/22302779437f1q0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daforewepon.epizy.com/54419896101.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_off0000d555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD555 5396 bytes
SHA-256: ae530ab4c13821d692f64f2653c2e528be185171870a75dcb67eb010922ab598
font_01_sfnt_off0000e7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DA 10508 bytes
SHA-256: d5d1e7e6940c9fc06020359fda34eff776e651a5b666b1797bbb239a33b4285c