Malicious PDF — malware analysis report

Static analysis result for SHA-256 742d270f1df932bb…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 14:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 563e27897e82b6b95ae68733e826352d SHA-1: 42b0bc999fbfea0195d4396aa24886812b40c08c SHA-256: 742d270f1df932bbfcec430399f29a15ec55b8df22f38ccbc9bc9a4a7080c570
82 Risk Score

Malware Insights

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

The PDF document employs a lure related to game hacks and free currency to entice users into clicking external links. The primary link, http://netcdn.tw/app/431946152/how-to-get-roblox-money-game-hack, is identified as a game hack redirector, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow, likely involving redirection to exploit kits or further malicious downloads.

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/how-to-get-roblox-money-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-bucks-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-trial_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-install-lego-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/tiktok-free-gas-hack_GM835599320.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-dungeon-quest-get-unlimited-gold-and-free-vip_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hacks-for-roblox-island-royale_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-a-bunch-of-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/well-hack-net-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-a-profile-on-roblox_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_off0000331a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331A 22604 bytes
SHA-256: 6a1eb0edc26b974d3986c28e5de68979204b7133f40e84f8379698d941331d54
font_01_sfnt_off00006564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6564 19128 bytes
SHA-256: 397d21c569f30b381af2d511aecbb934857227f7f4aa1123c4ac349e449f2a3b

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