Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbc81a79793e645…

MALICIOUS

PDF

64.7 KB Created: 2021-02-07 20:38:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b744d91faf36c3a6941575ed8492047 SHA-1: 7446a3edf943ee388badcf2da90f0ec005cbc3af SHA-256: adbc81a79793e6457772c258653114f79ef7092e45dbb56f8f1cc748936f9a83
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://seumenha.ru/aws?utm_term=loctite+5770+technical+data+sheet PDF link annotation
    • https://cdn.sqhk.co/jemitaso/NtOi4hg/dash_color_frische_test.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_6013c507cc72c.pdfIn PDF document text
    • http://hookup753.fun/lifososunidaovosd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482618/normal_5fe54355ee00a.pdfIn PDF document text
    • http://furafofuvobomu.22web.org/burger_king_coupon_mai_2019.pdfIn PDF document text
    • http://whalesqpa.fun/gfriend_offline_kpop_profileasf5j.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/gjS4Lje/laxovitizafidobatu.pdfIn PDF document text
    • http://qqkaxes.xyz/99337004262thn3y.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/hj7E3gD/60255073237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498345/normal_5feafcd282b20.pdfIn PDF document text
    • http://mists.space/pefubulodeguboxeldx1ny.pdfIn PDF document text
    • http://bevurib.22web.org/xuviris.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/fhchfje/gapiv.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/fuzafuzeruwit/clean_funny_answering_machine_messages.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/kavoref.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_off0000c0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E2 5216 bytes
SHA-256: 0ec47e7ec131642165e3667458ce5edf5e1d1d2c1ab6daf668cbde8556a81c20
font_01_sfnt_off0000d2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B0 10324 bytes
SHA-256: bf0a09c84d79df8f0388ef0c8159aa125bf92b2384b88bfce613c6eb5b17769d