Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cf1577d32121ef…

MALICIOUS

PDF

68.7 KB Created: 2020-11-24 08:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f24a38f1be43c32224ca6282cac89e75 SHA-1: d4f0e23aece6ba9ae759b81fe1f0fa1d74ea5da3 SHA-256: 59cf1577d32121ef9ead4e7d03a2845427f8f1a4620835e5565560d81ce73708
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is likely intended to lead the user to a phishing or malware download site. The document body, though heavily obfuscated, contains text related to 'Fallout 4 fo4edit', suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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/strik?utm_term=fallout+4+fo4edit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385235/normal_5fa044b3cceed.pdfIn PDF document text
    • https://revamimetanezoj.weebly.com/uploads/1/3/4/5/134597499/putusudazop.pdfIn PDF document text
    • https://mesovozilepako.weebly.com/uploads/1/3/4/5/134588792/fejet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f889fef99f66.pdfIn PDF document text
    • https://tonurokekar.weebly.com/uploads/1/3/4/4/134456200/vejinov_zonikonaluzakus_murakaxuf_dazidox.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/cf3add06-66b6-4c39-bf82-dbe0ec512195/tibevor.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/burumiv.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/moveligasavizoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/android_rooting_phone_security.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039c45f2-b5d1-474e-80c0-752331d2bdc5/summertime_saga_download_apk_free_pc.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_off0000d2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CE 4668 bytes
SHA-256: e6cdc3562bf23125b3bcdfecbc16fa9a07ba5a9239b1ba2a360bc1e3413e8eb6
font_01_sfnt_off0000e2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D0 10428 bytes
SHA-256: beac02b566a2fe11327f2ee936187d5152d0770e1af545f926ad0722138ca36a