Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9612ffbd3928ffa…

MALICIOUS

PDF

46.7 KB Created: 2021-06-11 10:17:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2e0ddfea5f720f0978dfe8203a46462f SHA-1: c6f51e54dc530514bdace9712edd2b20025e7bcb SHA-256: c9612ffbd3928ffa30e7430da12d9ecdd76d168f7f42dab7c19bc4b9cfd81c87
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URL is likely intended to download a second-stage payload or redirect to a phishing site.

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/hack-roblox-system48-free-game-hack PDF link annotation
    • https://sanjoseelectricians.net/images/free-dresses-for-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/get-free-robux-roblox-games_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-on-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/attack-on-titan-project-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-roblox-real_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-pokemon-go-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-robux-100-legit_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/car-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-roblox-script-executor-download_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/furky-safe-and-free-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-free-admin-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-hack-cheat-engine-65-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-fly-cheat_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-bc-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/hack-roblox-killaura_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-roblox-accessories-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/indidojoe-robux-hack_GM431946152.pdfIn PDF document text
    • https://discordIn 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_off00005466.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5466 27116 bytes
SHA-256: 2625b8c3bfa3b0d139e815154013b329ec2f5089f69420c449430a73d24286ba
font_01_sfnt_off00009145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9145 19164 bytes
SHA-256: 2633cb12d83da9cf0aa83cf701ed66d98c7cc439404cef354dcdfed292181c19

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