Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5a65b93fd15407…

MALICIOUS

PDF

69.7 KB Created: 2020-12-30 07:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 79eb6199fd26c932248c78a58cd6cf3b SHA-1: fb0d8d09fd4eac84d42a72b225e8a43a903a72ed SHA-256: 4d5a65b93fd154078dc8dd1c097d0b26b3e68cc9bda611504ad9638f72737c73
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically pointing to 'traffking.ru'. The document body, though heavily obfuscated, contains text related to downloading followers and likes, suggesting a phishing or scam lure. The ML classifier and ClamAV detection further support its malicious nature, likely as a phishing document designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/strik?utm_term=descargar+fast+followers+and+likes In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421478/normal_5fc842211f017.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/VlW9voM/space_marshals_2_ava_walkthrough.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393776/normal_5fe312cbef7d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491433/normal_5fcf87cb51a52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5fc1cf624bca0.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/xgfijhi/bikini_fitness_workout_plan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413228/normal_5f9bfcf8c99fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473375/normal_5fe83be698137.pdfIn PDF document text
    • https://cdn.sqhk.co/retirijozi/hjjZElC/27538634400.pdfIn PDF document text
    • https://cdn.sqhk.co/pexufenek/jUw3jjB/jonumimaxivize.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/vavabi/744427838.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/watch_instagram_story_anonymously_app_android.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD87 5344 bytes
SHA-256: edc8f63820a645b157d74202cdd9ba999a91ebab09ae0756084754bd1fe62c61
font_01_sfnt_off0000cfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE1 11452 bytes
SHA-256: 279ed070b5c18ca5880622ed9d6e8f6bf829d003935199d5250267bebcbb237e
font_02_sfnt_off0000f533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF533 16116 bytes
SHA-256: 3dae81b76154e7c62b3b0d30507344c78f02ee9172d09a03fe7a9af96af9e849

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