Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ed253ca679e703…

MALICIOUS

PDF

69.5 KB Created: 2020-11-14 05:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39787838beb43917c3ff8d6d8001bff8 SHA-1: 582363831ffa222a067eb54141b6532538d59532 SHA-256: 96ed253ca679e70354d7b75ae583c6aea4dfa0d21b1ba1a9db0b0fc470be5d08
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a large number of external links, many of which are likely part of a link farm. The primary malicious URL identified is trafffe.ru, which is presented as a download link for the movie 'Dangal'. This suggests a phishing attack aiming to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=dangal+movie+download+utorrent
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/gonisarogisabagudexo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/662ea708-2eaf-4b54-8c1b-92af1b91eac9/tazova.pdf
    • https://uploads.strikinglycdn.com/files/6e414495-c0cf-467c-b0d0-8064df69d774/dufazuzujita.pdf
    • https://uploads.strikinglycdn.com/files/038fb53f-c68d-4e90-88bf-d973a465ff1d/nagunaradonomakevopub.pdf
    • https://s3.amazonaws.com/lorifumofelu/hellcat_engine_for_sale_uk.pdf
    • https://uploads.strikinglycdn.com/files/d0f29de3-39dd-44c4-823a-5420fe4dd063/csgo_character_model.pdf
    • https://uploads.strikinglycdn.com/files/0eedc78d-19a1-4d01-9f9d-cf2cceda1d00/76344512460.pdf
    • https://s3.amazonaws.com/bokelur/29158953791.pdf
    • https://s3.amazonaws.com/vebogotexaf/32341872590.pdf
    • https://s3.amazonaws.com/zonebon/49903181263.pdf
    • https://uploads.strikinglycdn.com/files/feef1482-db19-4f21-b256-5f76bc8c63ec/63610525745.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d59c.bin
493ed29a82f476c72035bd44dae7fdd0f64643b6007ae13b2455fa6893bc3b6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD59C 5120 bytes
font_01_sfnt_off0000e70a.bin
b5deeae250c1ed91479dc9bd119876f7fcf4e8ff8446ba0b400689f135277932		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE70A 9972 bytes

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