Malicious PDF — malware analysis report

Static analysis result for SHA-256 4196b29dfa61e424…

MALICIOUS

PDF

59.9 KB Created: 2021-02-24 19:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fa70418d28a6cc2a575b3b7d54906ffd SHA-1: a4249f517d01c299bf34e3a145dbd03b017ea8f2 SHA-256: 4196b29dfa61e424fdbb9d012ab385ae73b705f8bcc9948a553e823eb443074a
124 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is described as a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. The presence of embedded URLs further supports the attack pattern of redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9571

Heuristics 4

  • 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
  • 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://leonvi.ru/award?keyword=estudios+biblicos+para+la+vida+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410433/normal_6023fee15a3a3.pdfIn PDF document text
    • http://wiregabjuk.fun/xitijulejekaroi.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/what_is_the_end_behavior_of_the_polynomial_function_y10x9-4x.pdfIn PDF document text
    • http://cardioactiveitalia.site/15380983486tz156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413119/normal_5fe1c0a19ce8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499635/normal_5fe510d9bf9d5.pdfIn PDF document text
    • http://hookup153.site/84509747083mx4xu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_60170923100fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447464/normal_5fc573f89d03a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410679/normal_601716a8a2cbd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487007/normal_5fcc283e97c9b.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/installing_sub_zero_door_gasket.pdfIn PDF document text
    • http://summer-italy.fun/97816681599g0esy.pdfIn PDF document text
    • https://bolowarokarov.weebly.com/uploads/1/3/4/3/134349384/c01b365ab82.pdfIn PDF document text
    • https://piteselijofer.weebly.com/uploads/1/3/4/6/134608400/8347001.pdfIn PDF document text
    • https://biziremidawa.weebly.com/uploads/1/3/5/3/135397591/mafitivubapuda.pdfIn PDF document text
    • http://kernig.store/logo_quiz_game_online_free1fvoi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388276/normal_5ff7b89c65559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuwedilejom.myartsonline.com/which_is_the_best_denture_adhesive_uk.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD792 5308 bytes
SHA-256: a99342bdd9ca6dba2bd0c5acb3b39fc60b01cdee876a0c16c55cd3c3ca97214f