Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9cdb7f02e543a3…

MALICIOUS

PDF

34.0 KB Created: 2021-07-07 04:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 29e2d439b6087ac8753f801aa8d89eae SHA-1: ebe3b074c186d674e58af59196ab4cd7cdd36341 SHA-256: 0f9cdb7f02e543a3004d1d60032a48c88f58dbbdf3f2bddd6f6f9a8401cb7a26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/fbchampion-game-hack. The document body and heuristics indicate a lure for game-related cheats or currency, designed to trick users into clicking the malicious links. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.tw/app/406889139/fbchampion-game-hack In PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/snip-hack-roblox_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/roblox-item-generator-hack-that-game_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/adopt-me-roblox-hack-money-free-youtube_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F46 22436 bytes
SHA-256: 9063956e44bb9bf5ad3e0ed7ef43fbdd009bf9cebfdf62307153d04f9fc0f307
font_01_sfnt_off0000613e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 18656 bytes
SHA-256: fb679c9250522cab0344be15c9898f12ed930a7de6dfe2591d59bad5f2ca43f7

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