Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c193087499e940e…

MALICIOUS

PDF

68.1 KB Created: 2020-12-15 15:14:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6c040357804d27c38b6774ec58b17df6 SHA-1: b4f5dcdef4e7e2095d2941036c818cf7a82fa229 SHA-256: 2c193087499e940e621f6cbcb0c1014c2514fc73f7a8ae6d58a3bf99d4bcb623
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains multiple external URIs, including one pointing to 'trafffi.ru', suggesting it's part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'latex cv template stanford' and 'wkhtmltopdf', likely serving as a lure.

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
  • 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
  • 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://trafffi.ru/123?utm_term=latex+cv+template+stanford PDF link annotation
    • https://fotumepajise.weebly.com/uploads/1/3/4/8/134857071/3fe4ab30e5.pdfIn PDF document text
    • https://kinijanara.weebly.com/uploads/1/3/4/5/134585029/zumenajen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5f89267e699e1.pdfIn PDF document text
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/2194b59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463803/normal_5fafa4dd7138d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369315/normal_5fc73a091820d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5fd8684c2fe36.pdfIn PDF document text
    • https://mitogisavubok.weebly.com/uploads/1/3/4/0/134019676/xajaso.pdfIn PDF document text
    • https://jobozisibipiw.weebly.com/uploads/1/3/4/5/134581899/f002c53b3f26deb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1162b68612547ed5f39f0/t/5fc3162deaf37e3b6401f9ac/1606620718908/thai_fisherman_pants_how_to_wear.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c77ac89e1c4b8fd772ad/t/5fcda7561e1a4d7de1478b46/1607313240751/59549895769.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e6675bcb0228a28f7e67/t/5fc5afcd7acac6192a866140/1606791118079/eero_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35e67cd1e280355e3f728/t/5fc550da9d793648403da272/1606766818308/dragon_ball_super_124_release_date_usa.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_off0000cc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC09 5368 bytes
SHA-256: be419f2a1f54931f069c9b0137dddabc2879b87cf689a448ce90c1e5ea9bc5e8
font_01_sfnt_off0000de42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE42 11100 bytes
SHA-256: eccf1d9d44adfa77736b7b2d6829f05168c8d17ca5dacac98d51722d0a28c849

Open this report in the interactive analyzer, or submit your own file for analysis.