Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cfb225ba16ee505…

MALICIOUS

PDF

47.3 KB Created: 2021-06-10 18:51:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 773ad44ecac28d1ec98504f03dc20178 SHA-1: 6cf0712b44cc9ebcdf15cd3b986ee8821e3980a4 SHA-256: 8cfb225ba16ee5054aa9f9faef1f30f87478377f90232f1055bc6e085b36233c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game cheats and hacks, specifically mentioning 'Azure Mines Roblox Cheats', to entice users. It contains multiple embedded URLs, with a primary redirector at 'https://netcdn.tw/app/431946152/azure-mines-roblox-cheats-game-hack'. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or download further payloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/azure-mines-roblox-cheats-game-hack PDF link annotation
    • https://www.colgr.com/wp-content/uploads/fsqm-files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-computer-no-inspect_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/robux-hack-dot-net_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/roblox-speed-hack-feb-10_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-pizza-place_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/roblox-how-to-be-a-nerd-no-robux-no-hacks_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-robux-rbx-membership-claims-and-generators_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/hacking-on-ipad-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/roblox-how-to-get-into-paid-access-games-for-free_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/her-roblox-acount-got-hacked_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-templates-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/roblox-speed-hack-without-cheat-engine_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
stream_004_off00005382.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5382 27900 bytes
SHA-256: 07ef3dbfc56ae019607c81e0d805267324c62900fad197a66969a244b76e634e
font_01_sfnt_off000094b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B9 18820 bytes
SHA-256: 95ec1343f135bdb17bc9191a68b97d28140febf8d872ae580862577201909316

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