Malicious PDF — malware analysis report

Static analysis result for SHA-256 91be5c682954cbb0…

MALICIOUS

PDF

65.7 KB Created: 2021-03-04 10:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58a0363ad9b8387abda0970431a283ae SHA-1: 87133fe76d78d34793f83b424dd93ea228551534 SHA-256: 91be5c682954cbb0ae79d084bd9726dabf809d5e14af906643f24d58aa309e6f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://dugedepap.ru/award?keyword=omron+hem+650+instructions PDF link annotation
    • http://yewes.fun/14602984123rje9r.pdfIn PDF document text
    • https://nonejekorozu.weebly.com/uploads/1/3/4/1/134108542/bomokanikar.pdfIn PDF document text
    • https://mubajodopiwal.weebly.com/uploads/1/3/1/4/131454521/6f13b3d68c38a.pdfIn PDF document text
    • https://cdn.sqhk.co/satijumok/6HspFje/86164572951.pdfIn PDF document text
    • http://reflectionss.space/alien_shooter_2st829.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/98876097180.pdfIn PDF document text
    • http://timinome.getenjoyment.net/7986625134.pdfIn PDF document text
    • https://xurozakewera.weebly.com/uploads/1/3/1/4/131414240/1bc01.pdfIn PDF document text
    • http://firstflirts.site/young_vw_service_hours78n1v.pdfIn PDF document text
    • http://zenelis.iblogger.org/click2houston_sports_reporters.pdfIn PDF document text
    • http://rojipaju.iblogger.org/dash_diet_for_indian_vegetarian.pdfIn PDF document text
    • https://cdn.sqhk.co/jelasusoved/nDihVih/live_nation_crew_nation_application.pdfIn PDF document text
    • https://cdn.sqhk.co/temududote/algdghu/dezixozoludosevila.pdfIn PDF document text
    • https://totamozosapopa.weebly.com/uploads/1/3/4/7/134712517/870e39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kowuvemanavo.rf.gd/quiz_logo_game_answers_level_13.pdfIn PDF document text
    • http://bogizun.epizy.com/gaxowemeruvej.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_off0000c2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F8 5244 bytes
SHA-256: 392bc3786dcdacf8e354bf2f2e930f84165f3fd66be8cd6c92c17a0a1a6ac1d6
font_01_sfnt_off0000d4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A7 10744 bytes
SHA-256: fced53b2ee7a1d970bc5497a9c406bc68e5a6be842ffdcdd61da120a3e9465ba