Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd8d6d10ec3ab660…

MALICIOUS

PDF

64.1 KB Created: 2021-03-22 03:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f13fc8b4b54c904d34bbbed01e94ca2a SHA-1: 028411f3772c889238e30175f336de9831974b1d SHA-256: cd8d6d10ec3ab660dbc607848fb9137ef3c37824c4e723609efe9645052f8d26
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains multiple embedded URLs, including one pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. The PDF's structure and embedded links suggest an attempt to direct users to potentially harmful external resources.

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://soxebez.ru/wix?keyword=arithmetic+and+geometric+sequence+worksheet PDF link annotation
    • http://jibozakux.22web.org/loreena_mckennitt_the_book_of_secrets_dvd.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/81811437843.pdfIn PDF document text
    • http://raxawevamavox.getenjoyment.net/how_to_get_sleep_without_dreams.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_6039fdcb55167.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497348/normal_5fffbf5921471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_600b36051d279.pdfIn PDF document text
    • http://kulixebuvalafin.iblogger.org/34328806999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujapoguxesak.myartsonline.com/brothers_grimm.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/algebraic_equation_questions_answers.pdfIn PDF document text
    • http://divejekojo.epizy.com/bhojpuri_bhakti_audio_dj_song.pdfIn PDF document text
    • http://lezuwibo.rf.gd/bornholm_mapa.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/widafefojugukafuxotekuziv.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/hatchet_book_summary_chapter_5.pdfIn PDF document text
    • http://fafinonez.rf.gd/ec_certificate_of_conformity_example.pdfIn PDF document text
    • http://xatosizukav.epizy.com/40169217221.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/zazojetivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a310b9-c161-4c6d-80d9-fe71f84098d5/why_is_my_motion_light_flickering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec51bb90-a0bd-4931-961f-e02a3507e029/how_many_seasons_for_sword_art_online.pdfIn PDF document text
    • http://lugifer.onlinewebshop.net/koseromawirep.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_off0000be3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3D 5592 bytes
SHA-256: 78a64e655c3a588a2b6a48b443c6fe157ae615f9f8fc3274872534945aad96f6
font_01_sfnt_off0000d11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11C 9916 bytes
SHA-256: 0fe4e38ddad615766df63104c6c2f97b9e0b31daf85edce01ed3bc09d28a60ae

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