Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2117ae1b8083b2…

MALICIOUS

PDF

71.2 KB Created: 2021-02-09 14:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 98411e9685d2b10a223097325c1d7f19 SHA-1: c8a54676354841da08cc123e690532dbad35ce8a SHA-256: fe2117ae1b8083b2dd3df3329f89b2bc80c051107f8b63e4503d495cae0a0518
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=bluestacks%20android%20emulator%20%20for%20windows%2010 PDF link annotation
    • http://hook-up.fun/oedipus_rex_study_guidecfapw.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/hrNiiSw/sonny_acres_pumpkin_patch_prices.pdfIn PDF document text
    • http://agent-ritual495.online/gangsta_party_free_mp3_downloadkxk8p.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/d0jht7I/la_novela_medicos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_600ae99e6a766.pdfIn PDF document text
    • http://wppremium.org/700661930764cqd8.pdfIn PDF document text
    • https://vanufutalolu.weebly.com/uploads/1/3/1/1/131164160/rowipagimajikudakibe.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/ew6Khha/directv_executive_customer_service_email.pdfIn PDF document text
    • https://zibinileder.weebly.com/uploads/1/3/4/7/134748255/1ae7099c6dc224b.pdfIn PDF document text
    • https://cdn.sqhk.co/pulizojiwim/cAlEZVj/48530843727.pdfIn PDF document text
    • https://feveronibamuja.weebly.com/uploads/1/3/5/3/135300243/mobidarupu-zovaxomozi.pdfIn PDF document text
    • https://cdn.sqhk.co/xivudebisov/hbhfShj/dizziness_vomiting_covid_19.pdfIn PDF document text
    • http://matrixbicycles.com/bonafide_certificate_application_form_rajasthanjjmaq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411932/normal_60184023ca517.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/ahhjhaW/while_true_learn_review_switch.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_off0000da8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8C 5568 bytes
SHA-256: e056b4b1623c8b1ac2e62eedb10513d144a409782b74518dbf95563201a62629
font_01_sfnt_off0000ed7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 10036 bytes
SHA-256: 4c19f95cf1181fe6e6fdc2c5969c8ecc16baa641014cdd7176a7af4097cf2885

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