Malicious PDF — malware analysis report

Static analysis result for SHA-256 04fdd70f7c96251b…

MALICIOUS

PDF

33.4 KB Created: 2021-06-17 18:10:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 93ae04c76bf845bf9e7f1fc955256d11 SHA-1: 4d2271b680bb942eef97be925874d35577c974b5 SHA-256: 04fdd70f7c96251b432ab79e5efee2e8e48db463fcd2bcc4a5369fbcf01139cf
82 Risk Score

Malware Insights

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

The PDF document contains multiple links and a lure for 'free Robux' or game hacks, indicating a social engineering attempt to redirect users to potentially malicious websites. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests this intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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/free-robux-obby-not-fake-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/best-free-exploit-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/greenville-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-items-on-roblox-without-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/will-minecraft-dungeons-be-free_GM479516143.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_off00002eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAA 21280 bytes
SHA-256: a544647957c3b741e338ff9bbc20a4a09fdd31005240571f26f3b376a09093c5
font_01_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 19168 bytes
SHA-256: 96d9573aacc5b37949c014ddd6d2a0f081519b1f3c433c681902d0c9442884ca

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