Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f30c377a8ef4b36…

MALICIOUS

PDF

72.7 KB Created: 2021-03-27 17:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3cbd20d43f51c761268ebbf4d59d3e13 SHA-1: 7d7d2a9fd73941c78db4f1c059de9508ffbc51c6 SHA-256: 5f30c377a8ef4b368ac75af4cd553960260648f4c8ed2cde04ab88d7ce1556cc
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used for phishing or to serve a second-stage payload. The PDF also exhibits characteristics of a link farm, suggesting a broader campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/award?keyword=william+s+burroughs+junky+pdf+download PDF link annotation
    • https://rasazumeg.weebly.com/uploads/1/3/1/4/131454762/topiwewawo-mukemiwisober-robivan-vibolomemolifuf.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/btec_level_2_performing_arts_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/72915875077.pdfIn PDF document text
    • http://ufenmac.com/medieval_2_total_war_americas_unlock_all_factionsw3l77.pdfIn PDF document text
    • https://vuloribogisoso.weebly.com/uploads/1/3/4/6/134655424/2707250.pdfIn PDF document text
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/2370159.pdfIn PDF document text
    • http://winoraama.fun/80218971155smeod.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/zemixidebekorelixumonug.pdfIn PDF document text
    • http://habirovradik.ru/jomoxajevekot0qfyj.pdfIn PDF document text
    • http://usacreditcheck.info/what_is_a_trigonometric_identity_definitionejzhw.pdfIn PDF document text
    • https://rurovipodi.weebly.com/uploads/1/3/4/0/134096689/rexedowepusuledogu.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/gjidkch/la_reina_del_sur_season_1.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/hRJidvi/fataxiwukomugazo.pdfIn PDF document text
    • http://arboozfilm.com/finatawudozuj79p4.pdfIn PDF document text
    • https://cdn.sqhk.co/jabezoxujo/nhj4hgC/93563929558.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/purikejar.pdfIn PDF document text
    • https://xagogijan.weebly.com/uploads/1/3/4/7/134720006/niwutexugumatuw-dizakugororirew-zorebinonat-tedikaregoxewa.pdfIn PDF document text
    • https://zivotawab.weebly.com/uploads/1/3/4/5/134576919/1882570.pdfIn PDF document text
    • https://cdn.sqhk.co/fekoguwiwu/6GiiKc0/wurebupafux.pdfIn PDF document text
    • https://cdn.sqhk.co/tefivezik/ggVjaii/difonujapuzav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38af9138-3733-454f-bf45-5bbb15681d52/master_cleanse_diet_recipe_and_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6526ab64-2fc6-42d9-b2eb-cd69074beff4/gem_of_the_ocean_symbolism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d6b084-f7c1-4ab3-89b7-52517bccd9dd/different_types_of_lockout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8283f15b-dcbf-4f15-b82d-e8e6a3cf4b49/32574521899.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_off0000dc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC19 5940 bytes
SHA-256: ea2b59a941bceb6ffa3a428680dcfeecd22b0ae108434b67fb3000605e006876
font_01_sfnt_off0000f04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04D 10904 bytes
SHA-256: a3ffc6e091c4eb554361c9841c879bd026f850bbe05f688c4784d43e0ebc3307