Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bcec850d29ddba…

MALICIOUS

PDF

82.8 KB Created: 2021-03-20 06:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 67891b66ed9395157c4c3a9df651eb9c SHA-1: d8b29c0090d597c363fdd9b1e1312ccefd2538a9 SHA-256: f6bcec850d29ddba1bbe350176d2b1180d70c70dfa61dc6d59eae8ff4c6db756
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to contain keywords related to game guides, likely serving as a lure to entice users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/123?utm_term=legion+commander+dota+guide PDF link annotation
    • http://winoraama.website/brigitte_overwatch_guide_20192xrgs.pdfIn PDF document text
    • http://mrshadow.net/kewerovetizipidel7folu.pdfIn PDF document text
    • http://tublitalia.fun/54326376306z6w62.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/gumifumenev.pdfIn PDF document text
    • http://blue-tick-central.com/legadowinepitezokixishoob.pdfIn PDF document text
    • http://bloomwithdeanna.com/printable_paper_rocket_templateefngh.pdfIn PDF document text
    • http://mybiol.site/mitel_5312_ip_phone_setuprprm0.pdfIn PDF document text
    • http://daating19.site/72338222998rflx9.pdfIn PDF document text
    • http://creamwalls.online/dapoxijesufo5773l.pdfIn PDF document text
    • http://ulekschool.online/riximibubxntlt.pdfIn PDF document text
    • http://nakanilo.club/age_limit_for_army_reserves_with_prior_service56nm4.pdfIn PDF document text
    • http://dinesan.iblogger.org/mcdougal_littell_algebra_2_2020_online_textbook.pdfIn PDF document text
    • http://ubsvp.com/ergo_360_baby_carrier_manual4n7n4.pdfIn PDF document text
    • http://antonioit.space/57380082995usmcf.pdfIn PDF document text
    • http://com-signto2.xyz/193674280982qjup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1e16da7b-5b4f-4122-a3c4-5c88c9d97cf7.filesusr.com/ugd/83f04e_2aac2a8b553d43629a6c20701523e3d9.pdf?index=trueIn PDF document text
    • http://tewowes.rf.gd/68407692980.pdfIn PDF document text
    • http://metiguwuwezaza.atwebpages.com/jepepawutujaxesalumegij.pdfIn PDF document text
    • https://fe92b815-f0fe-4223-924b-659339f44b90.filesusr.com/ugd/8f64fc_2200b93fdca949ad94e3a20b429223a2.pdf?index=trueIn PDF document text
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_923ac51c50044aecbb0bc72f9d23d062.pdf?index=trueIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_2aac80d56627450bb7fe83b72b1740e3.pdf?index=trueIn 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_off0000f07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07B 4992 bytes
SHA-256: 3510b2da6f17e21037b80e05283fb719d445f4b606b4f187514e0228429dc367
font_01_sfnt_off00010159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10159 1892 bytes
SHA-256: c4ebf9374f183e0d06abff076368f9778f5420368af1f3cb29c6cd45b472c97f
font_02_sfnt_off00010a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A79 21712 bytes
SHA-256: ad0632621ad1a15d7e766341795ef7a3316189e979682dbd809cfc3a012982dc

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