Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcf7cb478bc295a…

MALICIOUS

PDF

72.2 KB Created: 2020-11-16 15:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1dd9918e5f368ab9ff04bd742ea3804d SHA-1: dc2c53755fc3f8e4b31d30c52d70b67d9834cbe9 SHA-256: afcf7cb478bc295a033195487da40dc6aea9a9855562b9e4777c16bd3323fd63
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gettraff.ru/strik?utm_term=gangstar+rio+city+of+saints+apk+free'. This URL is presented in a context that suggests a lure for downloading a game, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file.

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://gettraff.ru/strik?utm_term=gangstar+rio+city+of+saints+apk+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424951/normal_5f9c494bb9f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f8dee39c47f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_5f970a91ee9a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446499/normal_5fa5b7cc41c84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f97d0ed6ca54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413119/normal_5fa99c48e2f4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f8721894f0ed.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/5a9283ca-41c6-4185-af7a-0f99eb8b6b95/read_impulse_by_ellen_hopkins_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/vutujeguwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/494d2325-0815-450e-a6c5-363d18002cc3/mikiduf.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/59592087894.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/43808143368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b30ddfe-6d21-4f6d-b85d-56e9cfd489da/baruch_my_own_story.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_off0000d33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33A 5348 bytes
SHA-256: 9944616afc3a4f2cf6e70264cdc8eb59ade8dca581ed9a3abd37cd807834e836
font_01_sfnt_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 14292 bytes
SHA-256: 5103d89e352c14c6c3bdf4f81d69517c7553f9901c8266f46328b3980d7956c4

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