Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df6ab928a9c12ac…

MALICIOUS

PDF

32.0 KB Created: 2021-07-06 19:52:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f5e5de078fa1298af8d1ced8d4bca244 SHA-1: ba74883696aff34505baa6d3384421f29985bb74 SHA-256: 0df6ab928a9c12ac75e18f11e5f430ec8b554f70008bf67b146aab9bed9a930b
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a document body that explicitly lures the user with promises of 'free Roblox Premium' and 'Robux Generator'. The primary URL, http://netcdn.tw/app/431946152/how-to-get-free-roblox-premium-game-hack, is flagged as a redirector for game hacks. This indicates a social engineering tactic to trick users into visiting potentially malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-free-roblox-premium-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-hack-anyones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-hack-a-game-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-nike-pants-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/lazyblocks-com-free-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_off00002971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2971 20948 bytes
SHA-256: fa4da8845cdd6f7e0574d77cfb3a95285019bc94cf735a9fdfcf61d0fccbb004
font_01_sfnt_off000056b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56B8 19592 bytes
SHA-256: 8b1b51e6228fdc9650fa24152b1b7f272427408116855cfdbd7c3d0194f83bbd

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