Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da67d52f8144cb5…

MALICIOUS

PDF

51.7 KB Created: 2021-06-03 05:42:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2c187c2046252abcab01d08ef06e09fc SHA-1: 6077bba7ec04c05c31ac29e46c6add223e048cb3 SHA-256: 6da67d52f8144cb5cf6277d5fbdab08e409b86a1e6d65220670ff43743d347e9
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 0.9464

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.online/app/431946152/free-robux-on-ipad-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/offers-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rbx-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FEF 25640 bytes
SHA-256: 2cc90fe764c1c9d392f2d93cc0aa30681978978c840e7a0a340967098e1cb5f3
font_01_sfnt_off00008bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAC 8252 bytes
SHA-256: 534f70f9892c3ab001244bca9ed5a591a95336d4b700c9b3d01fc37807b2870f
font_02_sfnt_off0000a6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C3 18592 bytes
SHA-256: 4ae05b13a8d3623fc8be9d582b03374b6da1b7c2137e59ff761560f156580baa

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