Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fe75ad826f0824…

MALICIOUS

PDF

67.4 KB Created: 2021-02-12 02:14:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb857d75e4004c520a69bf53b840bed1 SHA-1: b2f552101a699440d63d607f1f8d28693580d248 SHA-256: b7fe75ad826f0824cbb5a4f5e3c06f5b38381332f4b47e62fdbeca4e574ed86a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=acdelco+synchromesh+manual+transmission+fluid PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415748/normal_6007e4551314b.pdfIn PDF document text
    • http://goromeo.club/blue_background_for_baby_boy_freef6227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481164/normal_5fd038ef09636.pdfIn PDF document text
    • http://belkwigs.com/meaning_of_academic_performance_according_to5510m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465386/normal_60218c3348459.pdfIn PDF document text
    • https://cdn.sqhk.co/dexediwiboze/Q2ifCqh/wonupurukax.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/w8Zjjic/65277302037.pdfIn PDF document text
    • http://fakaripeti.xyz/naming_3d_shapes_worksheetsz10w3.pdfIn PDF document text
    • https://cdn.sqhk.co/robimovule/gyz36K3/worefovuwip.pdfIn PDF document text
    • http://delaem-sami.online/315257117798ifn6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482219/normal_5fdaab4ef1e67.pdfIn PDF document text
    • http://relax35.ru/pathfinder_kingmaker_city_build_guide1oa6f.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/zemigiduwagafu/simple_queen_platform_bed_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/anticancer_drug_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/xoxejonaf.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_off0000cc43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC43 5352 bytes
SHA-256: 0cf5fa39138356f588f4fb4fc8b4c6514eb19c29b84c1ccef7119cacb99748dc
font_01_sfnt_off0000de53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE53 10076 bytes
SHA-256: a20e264dfc32e33dca7877af6c4ad47ab86b7763ed8e8ba8f86b537e3478dc1c