Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b6008365afcde1…

MALICIOUS

PDF

69.5 KB Created: 2021-02-21 22:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: deb7fc12f668df86ec022ae7c0fe082a SHA-1: 884676bcd86dfb458830e207f0dd17edc8bee4d1 SHA-256: 41b6008365afcde1cad0479890efb8e3bffead9488bc57244d40d21a69b9dab0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=nascar+heat+cheats+ps4 PDF link annotation
    • https://wovorixikamaso.weebly.com/uploads/1/3/1/3/131378932/fajumevusiluviv_siwewiwijuk_bozika_xigug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453329/normal_5ffe08dbd6a61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_600e3eb280318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_6025cb05a3a9b.pdfIn PDF document text
    • http://difexolexakax.22web.org/aanandam_malayalam_movie_torrentz2.pdfIn PDF document text
    • http://rafale.store/799650741330kqqr.pdfIn PDF document text
    • https://bawidonawasaz.weebly.com/uploads/1/3/4/3/134354070/xepatavigeso.pdfIn PDF document text
    • http://trenketo.buzz/blue_book_equivalent_for_rvsyt8yu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5ff98ca472167.pdfIn PDF document text
    • http://uuuuull.space/waduzenolilekaragijinajaneim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_6019add978345.pdfIn PDF document text
    • http://reawolt.online/kalanefebevelulumaxbdk3n.pdfIn PDF document text
    • http://katermore.ru/voxudodigujeov6v0.pdfIn PDF document text
    • http://rogumim.iblogger.org/arvind_ghosh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_6017cced50f39.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_off0000d3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C6 5044 bytes
SHA-256: 43e7ba05f4220e1aee7dd041bcbd25b4d260624a4f50b9b86891a57ebc6ab31b
font_01_sfnt_off0000e4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F2 10644 bytes
SHA-256: ace560c2e046c7f28f38dcf9cb0c6bf5cd9b2a0d3952f381cbb739e1e6b786a2