Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c3927127085959…

MALICIOUS

PDF

72.6 KB Created: 2021-03-02 10:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c74431712f3d802cb45f509b97a83f6e SHA-1: f6e3e3ad2b97faeb42b2d2cd2dc7beb9ab1d57f8 SHA-256: 96c39271270859598d5e0a408418d9f9fac9c53d194e283e7bdb005b0d74d78e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=converter+wav+para+midi+online PDF link annotation
    • https://mixuvuweti.weebly.com/uploads/1/3/1/4/131483588/bd3f85509e.pdfIn PDF document text
    • https://rirupalolidofe.weebly.com/uploads/1/3/4/6/134601765/nogebomavozuruj.pdfIn PDF document text
    • http://pinudub.iblogger.org/dungeon_world_guide.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/suzipep.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/a02f6873.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/fluke_77_vs_177.pdfIn PDF document text
    • https://waxovidimised.weebly.com/uploads/1/3/4/4/134446407/ruzidudameridepi.pdfIn PDF document text
    • https://retumitoratosu.weebly.com/uploads/1/3/4/2/134234586/tinelisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/avolites_pearl_2010_visualiser.pdfIn PDF document text
    • http://vajekalisafemun.rf.gd/sir_chasing_summer_zip_album.pdfIn PDF document text
    • http://segudufarus.epizy.com/17496551298.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/12565403393.pdfIn PDF document text
    • http://rarifefivafew.epizy.com/fakuruzuman.pdfIn PDF document text
    • http://xazomagojuwa.epizy.com/bacchus_marsh_grammar_winter_uniform.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_off0000e219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE219 4984 bytes
SHA-256: 6e9c8c86d12dfa2649db6f122d17c4bd4c9b318e09be2b03a2aac9bddda37bd3
font_01_sfnt_off0000f302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF302 10160 bytes
SHA-256: 8910fb93d52e19d4197401a3dc21aa0bb429cf55823406bea9235309d39f2837