Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c681444759d9dfe…

MALICIOUS

PDF

79.2 KB Created: 2020-11-30 22:27:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1881b23df15e3436d46a32f20f322296 SHA-1: 1cf99e3ce5613f5a37c71284a4174380735d3f04 SHA-256: 2c681444759d9dfe39eb7550ce2e3d78a157deadbc710dd1d10f944e52f2495d
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. ML classification and ClamAV also strongly indicate maliciousness. The embedded URL is likely intended to lure the user to a phishing site or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/123?utm_term=spyro+tree+tops+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_5fc12ccaaeafd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f9002aab4b38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5faf0a315594d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463266/normal_5fb4543c8b6b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f86ff82152a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_5fb7c7924a149.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/fusidejebi/takironibadeku.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066c960f2895dc1e54813/t/5fc472e3a97599144e87446b/1606709987773/9851563865.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18357bda9c57a97c28a1b/t/5fc43f4f18e72e5fdb5eead5/1606696784720/gaston_bachelard_the_poetics_of_space_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd234477802d38de33c6a6/1606230852522/casio_gw-500a_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74342e90-d89e-4edd-94b3-34dff64d6911/80097212605.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d763c6ccf69f354d82e/1606372726621/mojebegirupadideteveve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909d0842-4d36-4b7c-8ef6-d6a6b3a66511/wilozuxufetiv.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/game_of_thrones_season_1_script.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_off0000faad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAD 5092 bytes
SHA-256: 14083962ee715789033614a97257006c9b6cf3caf4275d8a00f7ece24d948e55
font_01_sfnt_off00010c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C16 10532 bytes
SHA-256: 5bdd8e32fd05b67e5654c9f1c1c04290036413abc1836631f05e97012617b815

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