Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9c32ba9b52f6e4…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 17:09:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f14435c1b9cee23a56b8c18b7454bbda SHA-1: db8fb54ffe4e6e519ed8ad9b58d98c61bdde97ce SHA-256: 5a9c32ba9b52f6e4e4aa432ad5d26d80388cd4da23597e0b73a09ffb9a43fbd1
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/406889139/coin-master-hack-programmers-game-hack PDF link annotation
    • http://digilib.unbari.ac.id/repository/hack-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hack-cliens-for-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hacks-on-getting-more-diomonds-in-royale-high-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-a-roblox-account-using-cookies-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/shark-bite-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-roblox-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-robux-hack-com_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_off00003150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3150 22880 bytes
SHA-256: 40948a32b725233d27da06bbfa09131d6df78a0b4bb2bac1bc31ce5b0eaefa36
font_01_sfnt_off000064ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AB 18416 bytes
SHA-256: 5741a127261724fddf521fc94ebfc06f31583a26a9f94a4c147a021759ab8b48

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