Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf9be42bdae0b85e…

MALICIOUS

PDF

73.2 KB Created: 2021-01-21 07:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9bc2555ee552d676b589915de0a78a1d SHA-1: 2c30ff58e150d8ae94c3c43336e01929cd22bfe8 SHA-256: bf9be42bdae0b85ea91a751c8385733110a40ad22d72ff1fb668cd8e7fc44231
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=pixel%20car%20racer%20hack%20ios%20download%202019 PDF link annotation
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/xajidiboxovaxojudu.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/bQKjghf/68884407159.pdfIn PDF document text
    • http://jajosez.iblogger.org/vopasu.pdfIn PDF document text
    • http://vavoferidedodif.66ghz.com/diziler_soru_zmleri.pdfIn PDF document text
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/22ec60bac.pdfIn PDF document text
    • https://site-1166597.mozfiles.com/files/1166597/45455198746.pdfIn PDF document text
    • https://site-1191779.mozfiles.com/files/1191779/2305016438.pdfIn PDF document text
    • https://lerogufoporix.weebly.com/uploads/1/3/4/8/134885840/7503567.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/jb0gjhh/44816414671.pdfIn PDF document text
    • https://site-1176998.mozfiles.com/files/1176998/briefing_meeting_synonym.pdfIn PDF document text
    • https://site-1195176.mozfiles.com/files/1195176/piggy_bank_money_safe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5fa10b50b6ee6.pdfIn PDF document text
    • https://cdn.sqhk.co/motuvitewodi/1gdjhhg/69207105983.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nojubeweba.epizy.com/history_of_broadcast_journalism.pdfIn PDF document text
    • http://kavotipuwevir.epizy.com/greythorn_primary_school_ofsted_report.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_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 5736 bytes
SHA-256: 1172c655c977cbb8129d12bcc7646d0fd53d66c0e0c8691c11b3696d0de89113
font_01_sfnt_off0000f3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D9 10616 bytes
SHA-256: c52e7ce6a4ceaa2bc05ac9cca715b485b233525d6dc01119f57c972a15b9538c