Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ab9d321b2cdd05…

MALICIOUS

PDF

78.3 KB Created: 2021-02-16 16:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 710e3a2632a3c7b34177df5b9f106915 SHA-1: e56d87f84bb54985de21fb373c67e41d8ff91e90 SHA-256: 68ab9d321b2cdd055f60c0c2a7fc805fde02eb3df1bd75c0d4b4165ca646bfbc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, including one that appears to be a redirector for a phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=ashton+meem+partner PDF link annotation
    • https://cdn.sqhk.co/fovomesit/aZdgihb/77743717321.pdfIn PDF document text
    • http://indital.fun/50874378707gp3rl.pdfIn PDF document text
    • http://liketime.fun/penn_330_gti_specseut40.pdfIn PDF document text
    • https://cdn.sqhk.co/wanadujogo/iggChio/molemabemunotegekimib.pdfIn PDF document text
    • http://nimolebefiv.22web.org/61226042667.pdfIn PDF document text
    • http://shoop-fl.ru/xaruludotomafigewojokawog4yhrk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414486/normal_5ff47a211e9cb.pdfIn PDF document text
    • http://yarrebitteh.online/xibomenebidjpo8w.pdfIn PDF document text
    • http://bavunexebiri.iblogger.org/jutinawenuj.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/boRTK8W/29288938814.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/qmheTih/mepiruvakuvugolonavewuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_60252af09f813.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xugonowelimije.epizy.com/xozarobesisivamaluf.pdfIn PDF document text
    • http://botetuvixomidiz.epizy.com/nulikupatelupasadana.pdfIn PDF document text
    • http://masomoxesezog.rf.gd/fujenimedikid.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/galvus_met_es_igual_a_metformina.pdfIn PDF document text
    • http://lipisalozolujew.epizy.com/skinning_leatherworking_guide_bfa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E2 5016 bytes
SHA-256: 6f3bda5aa93b7549231b5542c09804bbe9c14ba7e09b4ef6649ada401059b965
font_01_sfnt_off0000f4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BB 2528 bytes
SHA-256: fa00ca2efb3740422adce526fcbaa5037a21e39b9482affa9e7d95016e3f9ad0
font_02_sfnt_off0000ffeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEB 10648 bytes
SHA-256: 2fbc1637e00d78ee0068c456b1d874bfbd3c257ee286abc4f1cb1c4c5cf8399e
font_03_sfnt_off0001247e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247E 1736 bytes
SHA-256: 551918360585b1590efa6fd2a215345b2f702067d151a0e4b48cfa7490b57960

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