Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbc8c3563df50a5…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 01:17:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c01e0649ef9e7d8f018b5de1d6089517 SHA-1: 075db7f7a1fe1cfcc271e0690a5cd7270804b88c SHA-256: 0cbc8c3563df50a5b5edfcb933e956b4f464ef5cf47ef662dc6d90aab35f4cd3
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.co/app/431946152/how-to-change-a-name-in-roblox-for-free-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/walk-through-walls-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-lumber-tycoon-2-cheat-engine-money_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-places_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-a-free-valk-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-shirts-free-girl_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/promo-codes-roblox-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/citizen-roblox-hacks_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_off00002dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD0 22104 bytes
SHA-256: 56f7cbc86fffc824e9f63773fa4d823e11eb84ce406db100939c3bdfa527c998
font_01_sfnt_off00005ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC5 19644 bytes
SHA-256: 709e79749e1ce2f84e6eb55c17f00b0b70f38f9bbe960e74b0dfe068dbf7202e

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