Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba6ec457ea44ad9…

MALICIOUS

PDF

53.5 KB Created: 2020-12-16 22:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 34f8efcae9554f30fbde920f2e01b3fd SHA-1: d9fcbe29b5435dcea7c638c34097fd7aa8023aaa SHA-256: 0ba6ec457ea44ad9ce349e55930221a734d20c0a28f319522bbdae91988cdead
184 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8618

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://traffset.ru/123?utm_term=book+of+symbols+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459624/normal_5fcdd44491371.pdfIn PDF document text
    • https://judunelikirolo.weebly.com/uploads/1/3/4/3/134375477/papovenejiwulosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413017/normal_5f99aa8447e2c.pdfIn PDF document text
    • https://vifepupu.weebly.com/uploads/1/3/4/8/134886621/pesigijuvemava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496216/normal_5fb37ad9a7d11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444353/normal_5fa73a70f05b3.pdfIn PDF document text
    • https://giwirakixa.weebly.com/uploads/1/3/3/9/133999144/migipijanajowafap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425209/normal_5fbb217fdd5f5.pdfIn PDF document text
    • https://watuboxe.weebly.com/uploads/1/3/4/5/134588214/3820d1e15f80.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/xapidajovaji/nupixurezixumakategotisi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66b1c3398ff7515537f6c/t/5fd70e4e034a586a4f5af82e/1607929422856/tripadvisor_budapest_tour_guides.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5444e8787e8798988a94a/t/5fd60be8154d727871e1b500/1607863279024/tbc_warrior_leveling_guide.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_off0000b930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB930 5636 bytes
SHA-256: 588d52220682f70b50e37e0b77456836d0f4e12efbf2ea5930d3bb916b4c8245