Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac0d37a93a9b5ce…

MALICIOUS

PDF

184.3 KB Created: 2021-03-22 15:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 080592524a2b0e1396b928fb543a2696 SHA-1: cde70fc2f92ff4cdacf179192c688777c799113b SHA-256: bac0d37a93a9b5ceed8ea039d3c9fab107c14fb44f830184a9ab629099c10e36
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating a strong intent to redirect users to potentially harmful content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, suggesting the document is designed to host a large number of links on low-reputation sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • 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 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/award?keyword=codex+genestealer+cult+pdf+fr PDF link annotation
    • http://eurofamily.pro/which_is_better_it_or_computer_sciencewy47i.pdfIn PDF document text
    • http://bigwin-1xbet.fun/jenabomefitatanime5i4q.pdfIn PDF document text
    • http://3gusevshop.website/zamiwisisolawonewhpl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5fd61c9b484b6.pdfIn PDF document text
    • http://mivetys.xyz/dererixinefeditowimotogfpuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484804/normal_6039847bce751.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/why_is_energy_independence_importantvy37i.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/dxeheia/butajixad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489402/normal_5ff6b0fec6ecf.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/jgidQha/one_more_chance_movie_lines.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/2010_camaro_ss_for_sale_los_angeles.pdfIn PDF document text
    • http://zutelotojenexop.getenjoyment.net/what_are_difference_between_distance_and_displacement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_5fe6ad53e5c34.pdfIn PDF document text
    • http://webpost.pro/zizelarakilotolodisiwamxbrsn.pdfIn PDF document text
    • http://fasoxuxesatilu.sportsontheweb.net/gisukeji.pdfIn PDF document text
    • http://1xbets-regs.site/doliluxiredidowafofidt6v2i.pdfIn PDF document text
    • http://copyright-securityx.com/bixudelejalimiralefifotnqwz.pdfIn PDF document text
    • http://sexesex.site/stephen_abbott_understanding_analysisf9a88.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/igThgsO/44836550699.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/uheYBgc/76026124998.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/da47ecd5-b03b-41cb-b8f5-51a891982b18/breville_smart_oven_pro_vs_air_fryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df665cfc-4e2a-4e34-94d4-e44bb09b3fbb/holding_up_the_universe_espaol.pdfIn PDF document text
    • http://zagupijalixi.myartsonline.com/simple_past_tense_exercises_elementary.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_off00029caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CAA 5296 bytes
SHA-256: dbe42bfb3a5a47c62f98f85fca51beba15fd96421fb44b07c94750dd6dcbf64e
font_01_sfnt_off0002aec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEC6 10316 bytes
SHA-256: d20bb8300ed9649c15253a3e4420d20f24994289817ba9212a3dae4ef682de17

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