Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef2f52ad0a9fdbd…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 17:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8cff74174b55aa36adaba4559e95555c SHA-1: 3a64a76b8b4c0da29313491e2df47bd1150b9c3f SHA-256: 0ef2f52ad0a9fdbdc41fac670c030e117d1bd3d3d64183bcfb5f6d4c90857ece
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a lure for game hacks and free currency, specifically referencing 'roblox' and 'minecraft'. It directs users to external URLs, with http://netcdn.tw/app/431946152/google-roblox-games-game-hack being a high-priority indicator of malicious intent. The document body, though partially garbled, contains similar references and URLs, reinforcing the social engineering aspect.

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/google-roblox-games-game-hack PDF link annotation
    • https://razredna-nastava.net/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-hack-clients-2021-aimbot-island-royale_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-from-codes_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/pubg-uc-meaning_GM1330123889.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-roblox-2021-agreeing_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/dll-hack-scripts-roblox-strucid_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-666-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-peoples-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-download-speed-hack-in-roblox-jailbreak_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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 22896 bytes
SHA-256: 93866d1205388891d65b405b1d80d1137c4118e765eceae9ecef7040eb2fb75f
font_01_sfnt_off000062fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FC 18748 bytes
SHA-256: d0dc1cce326ce02c76dee48a9656d27c0d400fba6131a4e9138ee57a128948a9

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