Malicious PDF — malware analysis report

Static analysis result for SHA-256 712d376ff37a6083…

MALICIOUS

PDF

72.2 KB Created: 2021-06-02 01:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d6e40c0486c1880fcf228be1d347fd10 SHA-1: 07f93f16e8c55a22d7d89f6c1324ce42c12ff609 SHA-256: 712d376ff37a608319e47f9524a748650864bc77895d20147cef569cc6fdc2ed
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a 'call of duty black ops 3 ps3 mod menu' lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, and ML_NYX_PDF_MALICIOUS and ClamAV detections confirm malicious intent. The document likely serves as a phishing lure or a distribution point for further malware, leveraging the embedded URLs to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://drafthe.ru/pbw?utm_term=call+of+duty+black+ops+3+ps3+mod+menu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463300/normal_5fe03a0c67490.pdfIn PDF document text
    • https://suzagosezamonu.weebly.com/uploads/1/3/4/4/134446802/xagawifoni.pdfIn PDF document text
    • https://kelukija.weebly.com/uploads/1/3/4/3/134337818/fodano_mebig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505358/normal_6014e50c88eeb.pdfIn PDF document text
    • https://ponefapu.weebly.com/uploads/1/3/1/6/131637257/gikonufiw_fugezivudalude.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401692/normal_5fcbf8289e039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450878/normal_60437da313608.pdfIn PDF document text
    • https://lalazifesulalo.weebly.com/uploads/1/3/4/5/134502535/2505731.pdfIn PDF document text
    • https://pusigodumutujor.weebly.com/uploads/1/3/4/6/134610993/lakufujab.pdfIn PDF document text
    • https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/3008331.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467003/normal_5fdfb67b92a46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460461/normal_5ffa6da12839a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466165/normal_5ff5a3ab3d7b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459176/normal_6058ec14b7c05.pdfIn PDF document text
    • https://dakuxemi.weebly.com/uploads/1/3/4/8/134883968/2520070.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mumasenekera.pbworks.com/f/67131095150.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/w/file/fetch/144443151/how_to_empty_dyson_root_cyclone_technology.pdfIn PDF document text
    • http://mapijakemifo.pbworks.com/w/file/fetch/144468036/what_can_i_use_instead_of_powdered_sugar_for_frosting.pdfIn PDF document text
    • http://padimagofo.pbworks.com/f/63040359750.pdfIn PDF document text
    • http://vimadutukad.pbworks.com/f/undertale_download_full_game_free_pc.pdfIn PDF document text
    • http://muxopal.pbworks.com/w/file/fetch/144480645/xepesenisawadimaduzim.pdfIn PDF document text
    • http://sinorodolu.pbworks.com/f/adobe_reader_editor_online.pdfIn PDF document text
    • http://sinorodolu.pbworks.com/w/file/fetch/144481059/acura_tl_type_s_manual_transmission_cargurus.pdfIn PDF document text
    • http://memofemovo.pbworks.com/w/file/fetch/144439857/95083884723.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_off0000d7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A6 5580 bytes
SHA-256: 2b8790527d6e0347cf2aa76ea5685be3e252ae63802dea4531fa305722182051
font_01_sfnt_off0000ea99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA99 12296 bytes
SHA-256: 6c0723a9194f6bc86f10f8b4994c3ebed3602fd0eb6326bbfb105c539d959ec6

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