Malicious PDF — malware analysis report

Static analysis result for SHA-256 262d99bcd033e092…

MALICIOUS

PDF

80.1 KB Created: 2021-05-14 22:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 986e15809689e570dcf1a65ec68a2b14 SHA-1: dc2d6271e030b45cfcffc3393330eb2df1cabb68 SHA-256: 262d99bcd033e092b6ac45d2534237a0f0ad3538869d88fbf13f1f3e67ba0309
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://nipisod.ru/strik?utm_term=the+birds+band+discography PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366995/normal_6012dab5680c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_60291b676d057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375521/normal_5ff2cabe0aecd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457563/normal_606cbeed363e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465277/normal_5fdda14879725.pdfIn PDF document text
    • http://xonajolonifimo.22web.org/94732125032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482860/normal_5fca25d28b0c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392661/normal_5fe5db7c5cada.pdfIn PDF document text
    • http://wisagomojinux.iblogger.org/trimble_controller_tsc2_manual.pdfIn PDF document text
    • http://sojafefewozuxub.iblogger.org/vofozuzenedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413469/normal_6021cf637432b.pdfIn PDF document text
    • http://jomokanus.22web.org/1863755654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_600daf18cf6c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5fdab0631a35a.pdfIn PDF document text
    • http://guwunewuwujulat.iblogger.org/jitojoveju.pdfIn PDF document text
    • http://zipezaronin.iblogger.org/boutonniere_deformity_treatment_splint.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://togugufi.epizy.com/13210491114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e4c21c2-4cc4-4c7b-9937-f5b76793c13e/amana_microwave_oven_price.pdfIn PDF document text
    • http://wuxanewelupeluv.epizy.com/tupofakotapove.pdfIn PDF document text
    • http://faripemisale.rf.gd/quran_english_version_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6427127-5544-4316-8bd3-438f3550d0a6/what_is_enthalpy_change_of_reaction.pdfIn PDF document text
    • http://vowenop.epizy.com/sincerely_yours_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc33b1f-2cdd-4a86-985a-ad20e57e3efd/sony_str-dh500_receiver.pdfIn PDF document text
    • http://fereralud.epizy.com/53721879388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99484814-3614-4fc7-bd6d-d04dbe9ccacf/dialectical_behavior_therapy_patient_handouts.pdfIn PDF document text
    • http://wamifuxifopaxu.epizy.com/fedositomufodiruraxir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e5cc66c-f24b-4364-ad85-82ced1f763de/is_coding_dojo_worth_it.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_off0000f94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94A 5496 bytes
SHA-256: 04767a81ade27c76167245a90d779cfb8cd29a1134357f2f133dd104ebccab77
font_01_sfnt_off00010bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF0 11400 bytes
SHA-256: 4ec4107b32f027e262e594c427b9026c3046018cdf7ebd5ce853e46affe35589