Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d8998ebc07396a…

MALICIOUS

PDF

48.2 KB Created: 2021-05-17 03:51:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d37a08ce7919675b47fc5c3c53fd6cca SHA-1: 407a9c43252f7e65e0151c08d7c29b73d42954b8 SHA-256: c9d8998ebc07396aa33489562b9236fbf1cd3c68ab2ef293de727c09d316d883
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-easy-no-download-game-hack PDF link annotation
    • http://www.drent.se/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/coin-spin-link_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://www.drent.se/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.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
stream_003_off00004aa0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA0 33380 bytes
SHA-256: bd02dc7e7722772c96c0887651e83bcfd06395c3a06c86fd9175019f7a20d2f5
font_01_sfnt_off000097b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B6 19108 bytes
SHA-256: 7bc61c49a0b734df4d56b9cb8c894117daf111bfa68c773dcc76edca8f070452

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