Malicious PDF — malware analysis report

Static analysis result for SHA-256 4644f9f9c470968a…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 02:32:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3236ab8c2e6b73458d13f50ba9485d2f SHA-1: 958fb7c93f64d64fdf7aae5fce167cbc0ed5bf1d SHA-256: 4644f9f9c470968a8e2e986ace78011975a5cacf4f82a57b74e7a7897030dda3
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/how-to-hack-roblox-passwords-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/roblox-legendary-swords-rpg-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-old-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-joystick-hack_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.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_off00002ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA7 22580 bytes
SHA-256: dd73737d4cb778596946931aaea49dc74055fd98bb70b3d056bc97f80443746e
font_01_sfnt_off00005f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 19148 bytes
SHA-256: 27c2480528306c14fc73cab21edc43c1c48bdb6a9d52717524bf8f54e0cb401c

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