Malicious PDF — malware analysis report

Static analysis result for SHA-256 a326cd1a5d98a7cc…

MALICIOUS

PDF

69.0 KB Created: 2021-02-01 20:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: bed31a58dc2f89d50debfe7614f8f0a7 SHA-1: 3dfa05af3784290c70fc4c55287a13917705322b SHA-256: a326cd1a5d98a7ccf37ca6093679f1be921a166f4273e2ffcfd4d1d2798b32ba
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a "PDF link farm" pointing to 30 external URLs. One of these URLs, https://maypoin.ru/123, is embedded directly in the document's metadata. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically classifying it as a phishing trojan. While no scripts were explicitly extracted, the nature of the link farm and the phishing classification suggest an attempt to redirect users to malicious sites, likely for credential harvesting or malware delivery.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/123?utm_term=may+2020+wish+codes PDF link annotation
    • https://xonutupusuvulin.weebly.com/uploads/1/3/1/8/131871786/jokoxadalufako.pdfIn PDF document text
    • https://zakazorexan.weebly.com/uploads/1/3/1/4/131407051/6905045.pdfIn PDF document text
    • https://vetinuvejozijuk.weebly.com/uploads/1/3/4/7/134745319/fdd0e3760ebb7b.pdfIn PDF document text
    • http://springital.fun/police_car_chase_crash_videos001ep.pdfIn PDF document text
    • https://bogilerilixami.weebly.com/uploads/1/3/5/3/135345361/9207809.pdfIn PDF document text
    • https://tevoletefe.weebly.com/uploads/1/3/1/6/131606261/4001110.pdfIn PDF document text
    • https://watorixaziju.weebly.com/uploads/1/3/4/5/134586039/4829150.pdfIn PDF document text
    • http://copyrighytsupport.com/khan_wars_wiki1ride.pdfIn PDF document text
    • http://all-system7.club/92092122253micoj.pdfIn PDF document text
    • https://fijapirugonobi.weebly.com/uploads/1/3/4/3/134315317/2277398.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/99660274546.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/bluetooth_driver_dell_latitude_e6400.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/super_street_fighter_4_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/58504350369.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/manual_book_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/vertical_line_test_practice_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/mizenamulutadajofi.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/biodiesel_production_methods.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_off0000d032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD032 5372 bytes
SHA-256: ad4f16f8cb2d03f6ffb60e53e8332d091e16222777124ac61cbf0d4b517e2c9f
font_01_sfnt_off0000e2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A0 10784 bytes
SHA-256: 7dc1ce4745af5f287411464078e0015190f85a3b7fe101107af9eace294bacd5

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