Malicious PDF — malware analysis report

Static analysis result for SHA-256 5443572e341bc9d0…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 11:25:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b865bfdabd923a880d8f919383e28af5 SHA-1: 24192e02388e6f097bdc1b2431e69e36abd1f60c SHA-256: 5443572e341bc9d0c519d2dc10b0f5506b0abc65714a55df81241efc3f6a13ff
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-robux-accounts-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-aimbot-hack-v3rmillionm_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301C 21804 bytes
SHA-256: 379d18c846f412111d4c90f94d8b7d309576cfa7a05259fdb9d3c006fc997952
font_01_sfnt_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 18820 bytes
SHA-256: 9247447a3c3765c463ad34d06656dabe45291e7d100ded84caf3f858f3985503

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