Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cafa7b5c7135100…

MALICIOUS

PDF

33.8 KB Created: 2021-07-02 08:43:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1d63d9a96dd2b1b719f38013b726da69 SHA-1: 5718c4fc9f15d356f44eea961009ed0446734923 SHA-256: 2cafa7b5c7135100c5a7914fe3c557968b8010a6850c487216c58fc140bebfd6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body reinforces this by containing similar links and text related to obtaining free in-game currency. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a potentially malicious site for credential harvesting or malware delivery.

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-get-free-robux-without-generator-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/roblox-rc7-cracked-free-downlaod_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-giver-real_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/swiftbucks-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-cods-free-roblox-obc-or-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/cerberus-hack-program-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hacks-and-cheats-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-invitation_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-buy-roblox-for-free-on-windows-10_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-giver-website_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-ralsei-roblox-tshirt_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/www-roblox-com-free-games-at-roblox-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_off00002eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEF 21416 bytes
SHA-256: b1a052c66dcea2a9571b32a1d9fa41a395b2c963b6dea282f1e81fc53514fc6d
font_01_sfnt_off00005dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 19468 bytes
SHA-256: b30ec9011a0960588ef8c0daa832d51a1de61046087ce1c4f07e909b9e1d8d17

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