Malicious PDF — malware analysis report

Static analysis result for SHA-256 39529c97d57f64fb…

MALICIOUS

PDF

67.6 KB Created: 2021-01-21 16:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: feedf365959a842063b599bb55f54555 SHA-1: 4f387a8e8319268148c45dbea87743af3ec8f570 SHA-256: 39529c97d57f64fba615ce6bab4e237513791203b2954a5ea96400903bbbe806
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing operation. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7805

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://leonvi.ru/aws?utm_term=arabic+house+music+remix+2017 PDF link annotation
    • https://jekaboda.weebly.com/uploads/1/3/5/3/135398795/2a7b267b0f3217.pdfIn PDF document text
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/7916003.pdfIn PDF document text
    • https://vajefusuvujob.weebly.com/uploads/1/3/4/4/134464162/2dbfb556b.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/tF9xiih/fodapuvov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476564/normal_5faeff273b07d.pdfIn PDF document text
    • https://wovogivas.weebly.com/uploads/1/3/4/0/134012667/70571cb3452407.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5fc93f0930085.pdfIn PDF document text
    • http://kekemubitaf.iblogger.org/67452120427.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456712/normal_5fccdffed6fab.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/panodovasegukux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490534/normal_5fb7aec4ada74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kirigawegugava.epizy.com/posthuman_ecologies.pdfIn PDF document text
    • http://puwomuf.rf.gd/jotufefulikamozanobuvezup.pdfIn PDF document text
    • http://joboberunora.rf.gd/lavexejajoku.pdfIn PDF document text
    • http://gosonuvubunevo.epizy.com/97937626991.pdfIn 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_off0000c8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D0 5612 bytes
SHA-256: 9fd09efe9a9062428a51357767455df3e6406cb20713d5a0cfffb689e1d0204f
font_01_sfnt_off0000dbc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC4 9972 bytes
SHA-256: c7e5c06c101979d32f16f2c0880db78915e5a1fef66d3ef434d29716e3a5e845

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