Malicious PDF — malware analysis report

Static analysis result for SHA-256 7515a741ce5e7847…

MALICIOUS

PDF

76.0 KB Created: 2021-01-14 05:18:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3ab876cf62e12952f66c6fa8da9d5a90 SHA-1: 9053af570d2ddde717f2c256ec6d72e1c0408dbd SHA-256: 7515a741ce5e78473e8213548676560fa5a5f5db25152c6adefab4df06554669
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm designed to redirect users. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://traffmen.ru/aws?utm_term=technical+and+commercial+proposal+template'. This indicates the document is likely part of a phishing or scam campaign, attempting to lure victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffmen.ru/aws?utm_term=technical+and+commercial+proposal+template In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446147/normal_5fc05efb87a26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_5fdb7082a2ea1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5feed9be6e79f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501495/normal_5fe1178a2978e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f8e01f7dc8ca.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/wubelu.pdfIn PDF document text
    • https://vekatofe.weebly.com/uploads/1/3/0/7/130775682/rapokefufomududoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f874ec45e3ab.pdfIn PDF document text
    • https://fotagajumiveba.weebly.com/uploads/1/3/1/4/131411987/9058573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393193/normal_5ff85819319da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_5fbe1cf205353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461525/normal_5fba9df0e1e2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447916/normal_5fd710b6be477.pdfIn PDF document text
    • https://kejedavozeve.weebly.com/uploads/1/3/1/4/131483662/6340987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5f98b025071b1.pdfIn PDF document text
    • https://rozinefowo.weebly.com/uploads/1/3/4/5/134576391/xivejokijoneseju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375890/normal_5fd3226c067c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED49 5260 bytes
SHA-256: ad04613a01e105b209373274965ea704aefeaa528bceeff2e58ce1b36c6a0c02
font_01_sfnt_off0000fefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFC 10540 bytes
SHA-256: ca941dff73f8a271aabb767998082a099794c92f96e13ad3f8e3346c9406f444

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