Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59931e039cd8431…

MALICIOUS

PDF

68.3 KB Created: 2020-12-31 00:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c78caa28fdfdf37d3f0a507fece4986e SHA-1: 3d6c489de16946bda2a14139ea14dafa8be36f2a SHA-256: a59931e039cd8431b6fc84092117d217739dd393b6c76cbe1a451cd5d3bcc7cb
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying it as a redirector link pointing to malicious infrastructure. Another heuristic indicates a PDF link farm, suggesting an attempt to distribute or host malicious content. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=ilive+gold+edition+apk+1.+2.+4 In PDF document text
    • https://vezejajanobel.weebly.com/uploads/1/3/1/6/131606482/posugeziw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f87e84aeefff.pdfIn PDF document text
    • https://vavetupabon.weebly.com/uploads/1/3/3/9/133999816/67fcc804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5fa0a7a879231.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423780/normal_5fcedf3398e09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392668/normal_5fe54305a3115.pdfIn PDF document text
    • https://kibopomirisusi.weebly.com/uploads/1/3/2/7/132741064/44ca8.pdfIn PDF document text
    • https://cdn.sqhk.co/fadanade/hdiiib8/57133031613.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/hgjfkpK/21824961115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418570/normal_5fa27ca46e4f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9636614c-16ec-4a52-9d97-82f804d8aa5f/mebufevikidumakobagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31037588-57ce-45cd-9e2a-e0158033145d/cos_2x_identidad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898b0fa0-6352-4ce8-a025-14e0193ed731/66916393694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01e580fe-9c09-472f-bf24-3b1d01b095da/dupofaveminozes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132ee87d-25df-4d30-b07e-d67c413362d1/snowball_club_crans-_montana.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_off0000cc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC75 5216 bytes
SHA-256: 8abb4d5c84c38c925996d83a52b2d2b7ee5afa8dcd968e1a7d54afab36a6d18d
font_01_sfnt_off0000de63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE63 10696 bytes
SHA-256: c5a5fdd304229bbd9e0dfbeee49c9250c5057430ef1a04d1abc9b39241949de0

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