Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff8c8ec9916c60a…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 04:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3d1ddfc8d42337ce8fabb2fe1bc35e97 SHA-1: 8bf88e5b6fa00279d7056f621bd42e0bee870970 SHA-256: 0ff8c8ec9916c60a7960539e630bed3a397110abfd1384aafaa501e66a81c9fc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/wix?keyword=heroes+legend+hack+tool PDF link annotation
    • http://songkfrk.site/nugatunisozasukavoterei9ny3.pdfIn PDF document text
    • https://gedenotovet.weebly.com/uploads/1/3/1/3/131379555/5963853.pdfIn PDF document text
    • http://tvoyoproc.fun/applied_business_statistics_by_trevor_wegner_3rd_edition_free_download53g40.pdfIn PDF document text
    • http://xtw2.club/voxusukzpwhi.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/jdxk55y/youtube_relaxing_blues_blues_music_2014.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/eyidif1/freeway_ford_parts.pdfIn PDF document text
    • https://gemaxapofa.weebly.com/uploads/1/3/2/6/132681544/marutakanaxuvelu.pdfIn PDF document text
    • https://sivevaredewiw.weebly.com/uploads/1/3/4/4/134464028/2156013.pdfIn PDF document text
    • https://powelogub.weebly.com/uploads/1/3/1/8/131871449/5ec81c.pdfIn PDF document text
    • http://mignonette.space/blender_2._8_manual_book8ro3s.pdfIn PDF document text
    • https://penaveligatoka.weebly.com/uploads/1/3/4/3/134314422/jutikilesire.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/bifufibemugesopo.pdfIn PDF document text
    • http://fruit-citrus.space/6879729322172b0p.pdfIn PDF document text
    • http://pihodze.com/37181822938e9ozw.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/lakujusitejojet/cornelius_castoriadis_livros.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/78910265441.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/lilufeguteviwax.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/vlookup_exact_match_google_sheets.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_off0000d616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD616 5224 bytes
SHA-256: a6664a9e595cf6c12c360a49cb2cddf7c08646ec261933eeda3789c4da6bd150
font_01_sfnt_off0000e7ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CE 10408 bytes
SHA-256: 1138e55376fb6c366cd3277c8f114a57f9a37fe3d4ca4a95d94cc9ad01adfa6a

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