Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb2f3e5d0e2f6fc…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 15:40:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5ce0c87e286413336db07cc6fb4011b5 SHA-1: f47f4e71acc28571190007b81cebc30855bfd8db SHA-256: 2fb2f3e5d0e2f6fc34dfc0ce986efb4906ffea6e710e8d6aa8c189887a09c8b9
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/roblox-brickbattle-hack-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/i-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-gift-card-codes-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-on-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/se-puede-hackear-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_off00002e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E29 21672 bytes
SHA-256: b8b6fadcff91a92b8541389eadd456bbdefb9f5c0384e091d427117e68caecc8
font_01_sfnt_off00005d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9C 18880 bytes
SHA-256: 1360b8a5982b01ca60dc8216edf2ba51c7456a018b49887507628b64bef9e2e0

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