Malicious PDF — malware analysis report

Static analysis result for SHA-256 61c1f7ff889cc544…

MALICIOUS

PDF

58.6 KB Created: 2021-02-17 20:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 652a981d1e04faf67f0e580ecc9b9e99 SHA-1: 9846837fe541e380abe60a417887473eed1275ef SHA-256: 61c1f7ff889cc5447448e477b83a9ff21b4a9f63117387633d8bfd29c021e992
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as a link farm, containing a large number of external URIs pointing to potentially malicious content. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an intent to redirect users to phishing or SEO spam sites, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6841

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.
  • 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
  • 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://baarspo.ru/aws?utm_term=sony+wega+tv+32+inch PDF link annotation
    • https://cdn.sqhk.co/kadukugobug/ifgfOMo/first_national_bank_ames_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/gdVAkjb/horizon_zero_dawn_forbidden_west_pc_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/jghihhl/creative_destruction_hack_apk_2020.pdfIn PDF document text
    • https://jagusidenoz.weebly.com/uploads/1/3/4/9/134902343/bd305d379a23.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/xagemefe5ggv.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/komefe.pdfIn PDF document text
    • https://sezowizubuv.weebly.com/uploads/1/3/0/8/130874308/615864.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/13jgxBq/best_shoot_em_up_games_nintendo_switch.pdfIn PDF document text
    • http://best-store.club/learning_arabic_language_of_the_quran_free_downloadaluuy.pdfIn PDF document text
    • http://freshmind.net/arcsin_android_calculatorgix6i.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/MjdLXiR/talororapedabokak.pdfIn PDF document text
    • http://copyright-helps-team.com/800483348803fgbx.pdfIn PDF document text
    • https://jarowezib.weebly.com/uploads/1/3/0/8/130813985/7a730.pdfIn PDF document text
    • https://ruwixotuso.weebly.com/uploads/1/3/4/1/134131383/selale.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/puwewelajatobimimojatibub.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/defender_chords_g.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/769725706.pdfIn PDF document text
    • http://pirajog.epizy.com/vatigopimiv.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/91794795653.pdfIn PDF document text

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