Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0b48beff76a2bf…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 18:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: afc473bae19a36a267bc6477b1c816cb SHA-1: cf660504d1e8f635e53844b3afc3e25722e9837e SHA-256: dc0b48beff76a2bf4418d8aa733dbb3b24860ce2e6629f29b89437e1a5b78887
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure for 'free Robux' or game hacks, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to redirect users to potentially harmful websites.

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/free-robux-no-survey-or-human-verification-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-explorer-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cruise-ship-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-promo-codes-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-bee-swarm-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-links-coin-master_GM406889139.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_off00003151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3151 22360 bytes
SHA-256: 8a0e95f72c20ccb60cae53b1d55705949f34d5f74a35627b6e97710660d955bd
font_01_sfnt_off00006312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6312 19628 bytes
SHA-256: cdea958d27f31e1bb93a151c26d135a3dbedf9ed5520af1903eb9fa34a77bfdd

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