Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa599fba23157d8…

MALICIOUS

PDF

63.2 KB Created: 2020-11-26 05:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5e22de6aedcd862a2675b1d0ed359775 SHA-1: 3a7d98326d334f0455dbd69f322e89f4aba58dd7 SHA-256: eaa599fba23157d829a8ea7778b85d1ebfebde2be920fbd02e08a9dc30ff0e0b
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 'https://traffmen.ru/strik?utm_term=florida+everglades+map+location'. This indicates the document's primary purpose is to lure users to a potentially harmful website. The ML classifier and ClamAV detection further support the malicious nature of this file, classifying it as phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=florida+everglades+map+location In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5fa7123c79e8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497658/normal_5fb3e37598c93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426812/normal_5f9c11621395c.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/pituselekot-wiwiw.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/xovajukoxin/guide_to_critical_appraisal.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/vocabulary_answers_level_d.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/tixexerot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ae9f7dc-9710-44ba-b027-cdf49879297a/chrysler_grand_voyager_2.5_crd_webas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/617cc1a8-7772-41c5-91c0-470364ad5762/57396127866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b07b3e-bd2e-4705-868b-68c81af14f3f/nj_2020_estimates.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_off0000b7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7ED 5408 bytes
SHA-256: 28d34a0e71947e8aac0efa420b59acdb8e0b6716dc5ba473f54c3be19369bfc5
font_01_sfnt_off0000ca49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA49 10588 bytes
SHA-256: d38f9b0b093d2d41853639beb685d69cc4ec4bbd2357aefb3828fee2129510b2