Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c086124cca2618d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-01 13:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f7d376ef62e1fe544fc2a5dc5021514 SHA-1: 4a187fd48ea2720bd22a67778ac8a8011b3b8c1b SHA-256: 5c086124cca2618de116b5e770912b6eaef023ca3aca708b3cfff8229ae44d3c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to external domains, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a T1566.001 (Spearphishing Attachment) attack pattern, likely leading to further compromise via 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://seumenha.ru/wix?keyword=vintage+snowmobile+service+manual PDF link annotation
    • http://tradestaroffice.com/88792927705ywkwt.pdfIn PDF document text
    • http://community-day.ru/second_hand_corrugated_iron_sheets_for_saleksxas.pdfIn PDF document text
    • https://cdn.sqhk.co/muresogus/4ibpkgj/smash_bros_switch_used.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/GiiiCWe/battle_souls_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xurajalijok/jhifidM/23702961124.pdfIn PDF document text
    • http://omshop.space/bees_saal_baad_movie_480ps1xvw.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/giheP05/maromogogi.pdfIn PDF document text
    • http://ritikutoxukor.22web.org/tepobojabixoveserujo.pdfIn PDF document text
    • http://zumubexupon.22web.org/beat_maker_go_free.pdfIn PDF document text
    • https://cdn.sqhk.co/masezupusi/e0KwigX/90869672565.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/hgggKic/53848758225.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/f9Nahdo/duwas.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/best_water_filter_for_home_consumer_reports.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/7jj7FOb/59982445718.pdfIn PDF document text
    • http://foyou.store/shiva_cartoon_tinyjuke_nety1aia.pdfIn PDF document text
    • http://pokemonrivals.online/has_it_ever_snowed_in_the_summer_in_ohioqrq6u.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/75647318643.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/oSeih8r/sijudasojexujapet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lozufoxozaniso.rf.gd/acsm_cpt_practice_test.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8C 5256 bytes
SHA-256: fb67b9e3b2eafbab4d49134600aa3fbf773451f5e2c66475a5a26b8db4853fb2
font_01_sfnt_off0000ec71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC71 15048 bytes
SHA-256: 41e99bc3e8961376276aed5471916a0a1f6e4f3c0f9aa009878f9b6cf58c7189
font_02_sfnt_off00011a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A81 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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