Malicious PDF — malware analysis report

Static analysis result for SHA-256 93651dbc9e31e59b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 02:34:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d29028ebdee53f7d5ba68ef9b1521626 SHA-1: 52ed4bc75696b9e95a16cecbf2b8a3985afe6f9d SHA-256: 93651dbc9e31e59b9b10a6efbc1ebdac68cb87eaa21b069bac1f3e638216af33
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links that are designed to lure users into clicking on them by promising game hacks and free currency. The primary link, http://netcdn.co/app/431946152/roblox-cheat-discord-game-hack, is identified as a redirector to a malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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/roblox-cheat-discord-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-a-dj-pass-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/rbx-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-jailbreak-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-make-free-roblox-shirts_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-kingdom_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-2021-january-not-fake_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hacking-jailbreak-unlimited-money-omg_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-attack-hack_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_off00002f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F58 22684 bytes
SHA-256: b05fc9288d7c225379b61673fec3ac6c6e10e6e1eacd552c8880ad04417b8023
font_01_sfnt_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 19220 bytes
SHA-256: b4484f30e293ff7b4a137505f85b3f8c95a5c8e6eec88af3ac97b65c9c86ed13

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