Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0c2d9a99368646…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 17:18:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2afd0e537cab57182a7fb427e527d069 SHA-1: 9071e308a46c247d8f689562e7b69f4ffbae62e8 SHA-256: 6f0c2d9a99368646b88bc3b07a91e882d5b0bb561c34a3283a418b0e167e9fe3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and links to a URL that appears to be a redirector for game hacks. The document body and heuristics indicate a social engineering tactic to trick users into visiting malicious sites. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, and the overall structure suggests a malicious workflow.

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/get-robux-for-free-2021-game-hack PDF link annotation
    • https://www.fishboat.hr/files/hack-roblox-robux-code_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/how-to-get-roblox-back-if-i-was-hacked-2021_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/roblox-project-jojo-hacks_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/lua-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/site-17-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/can-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/wyas-of-getting-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-free-spins-and-coins_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_off00002d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2F 22328 bytes
SHA-256: 17f9c6011495ccf8ba2bd6c6c3684f1fc9f95f93918fedbd42a6338d822c9767
font_01_sfnt_off00005f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F19 19224 bytes
SHA-256: c7e6ea762fc2e85d80aa6669a0bc8c0fc47ec2f37a4be0fa16c010cf46ec438a

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