Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a368222374dc2d5…

MALICIOUS

PDF

44.7 KB Created: 2021-05-16 12:56:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d1c41a69695737b8e28a91a8e54ee418 SHA-1: be3a0bd6230090c9491d9b8f7ff7ae90fc3aa2ff SHA-256: 9a368222374dc2d5cb0c1af4ed0a9f335a90ca37e4060238a66d5efdb893a32b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and free in-game currency, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm heuristic further supports its malicious intent. The document likely serves as a lure to direct users to malicious sites or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/free-robux-without-downloading-anything-game-hack
    • http://asiashop-france.fr/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdf
    • http://asiashop-france.fr/images/how-to-hack-roblox-passwords_GM431946152.pdf
    • http://asiashop-france.fr/images/free-robux-accounts-2021_GM431946152.pdf
    • http://asiashop-france.fr/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://asiashop-france.fr/images/websites-that-give-free-robux_GM431946152.pdf
    • http://asiashop-france.fr/images/coin-master-free-spins-link-today-hack_GM406889139.pdf
    • http://asiashop-france.fr/images/official-coin-master-free-spins_GM406889139.pdf
    • http://asiashop-france.fr/images/roblox-hackers-list_GM431946152.pdf
    • http://asiashop-france.fr/images/50-free-spins-coin-master_GM406889139.pdf
    • http://asiashop-france.fr/images/dailyrobux_GM431946152.pdf
    • http://asiashop-france.fr/images/coin-master-free-spins-daily_GM406889139.pdf
    • http://asiashop-france.fr/images/como-hack-coin-master_GM406889139.pdf
    • http://asiashop-france.fr/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • http://asiashop-france.fr/images/minecraft-pe-server-hosting-free_GM479516143.pdf
    • http://asiashop-france.fr/images/free-robux-codes-2021-not-used_GM431946152.pdf
    • http://asiashop-france.fr/images/coin-master-daily-free-spins-and-coins-link_GM406889139.pdf
    • http://asiashop-france.fr/images/hacks-to-get-free-robux_GM431946152.pdf
    • http://asiashop-france.fr/images/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://asiashop-france.fr/images/minecraft-games-free-download_GM479516143.pdf
    • http://asiashop-france.fr/images/robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a6b.bin
e89a0f36b99ac4318a3cd2270c78e0e56876ff872302900774ddd6af0c939498
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6B 26756 bytes
font_01_sfnt_off000087be.bin
6bc5cab104a17e5be196146aaeb40b5940258b3e295a46c016ac1ce7c3ec9493
pdf-font-stream PDF embedded font (sfnt) at offset 0x87BE 19880 bytes