Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c730a95d1c4e04…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 17:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 76f29c8d43152ac7377624ea8a0d1eb1 SHA-1: 3b01a0cb6f29f8d99fafa5eb7960f49f5dd42930 SHA-256: b1c730a95d1c4e04ce46e19c2eace9e5abd2f728adeeb8b9a93b5c10ace9dfb3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple embedded links and a call-to-action lure, directing users to websites offering game hacks and cheats. The primary link, http://netcdn.co/app/431946152/hack-roblox-dragon-ball-rage-android-game-hack, is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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/hack-roblox-dragon-ball-rage-android-game-hack PDF link annotation
    • http://www.pspmrsmkber.com/opac/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-nike-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-woman-face-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-pastebin-com_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/roblox-cheat-aimbot_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-speed-hack-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-no-download_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_off000030ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CE 21840 bytes
SHA-256: f1afe1d70082a0ab1778b4d6f82dfac6b8291a06b41622b88aebf95fb2586842
font_01_sfnt_off000060f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 19116 bytes
SHA-256: 2a1c13f251b9f0e1e22140a943a57204f9e1d3637b8f4b153caee842b7021b47

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