Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3fab045a6d8a4e…

MALICIOUS

PDF

77.5 KB Created: 2021-02-26 06:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 77e10ce16c35a9008874fd3c8acb4ccc SHA-1: 15fd666af1bd71777a70d4503340a8d2b124f8e5 SHA-256: 1a3fab045a6d8a4ea819eeb4eafa1a29f855b95c1f7c2b5c1ea51e8a7ab4b5de
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/award?keyword=how+do+i+find+my+metabank+account+number PDF link annotation
    • http://nout-sale.site/gifole5mclz.pdfIn PDF document text
    • http://hyipinvest.site/whats_my_love_language_quiz5m7ko.pdfIn PDF document text
    • http://prequester.online/dell_inspiron_one_2320_drivers_downloadn9zu4.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/big_fish_audio_momentum.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/cZijNhb/my_at_t_tv_customer_service_phone_number.pdfIn PDF document text
    • http://verifiedbadges-form.com/eckert_animal_physiology19kej.pdfIn PDF document text
    • http://allwoman.site/31851365903blbh3.pdfIn PDF document text
    • http://mysteps.online/67060055605ijt4y.pdfIn PDF document text
    • http://4d-5d.com/quality_engineering_using_robust_design_phadkem037e.pdfIn PDF document text
    • http://xozonline.ru/gidanetikiwogafexisdilp5.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/6bV8iiV/xotafubenozewiwavavug.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/bowazefetexu.pdfIn PDF document text
    • http://rusherx.studio/superhero_hedgehog_mod_apk8bfp2.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/jdmgiHF/rugby_league_championship_2019_results.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/nakuzafol/97869607877.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_off0000f1e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E3 5316 bytes
SHA-256: 4b17d7d58eb275bc7704e041a6349762a2e900c7e9abbb66ec38137660b7755d
font_01_sfnt_off000103ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FF 10884 bytes
SHA-256: 2baa225c929a7fb9ae76276b9951325f9905761c858ef431af749fccd08ac348