Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00fded6b898a17a…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 00:50:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7e66be2a487fab27edc428690d215e64 SHA-1: aa4398cf069f4825ab8da4db00bb8975dd08c987 SHA-256: f00fded6b898a17a73d031e212b077a6d82b99399b8ec032a84136d00eb72d8d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/coin-master-2021-free-spins-game-hack PDF link annotation
    • https://stptonline.badungkab.go.id/assets/CKImages/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-to-upload-audio-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/robux-generator-hack-tool_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/free-roblox-city_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-to-hack-my-roblox-account-back_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-to-get-robux-for-free-grantz_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/roblox-murderer-mystery-2-hack-2021_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/how-do-you-get-free-chat-on-roblox_GM431946152.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://stptonline.badungkab.go.id/assets/CKImages/files/coin-master-game-free-spin_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
stream_002_off000031f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F9 22752 bytes
SHA-256: 375308ddfd30385a4bf00d2e73b4e353f895dde752fe764c6751b8ca1f187596
font_01_sfnt_off000064eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 18576 bytes
SHA-256: 35e5f20b05e6bdeb821d9650870183b7a7c1f79b7df8c2ba0d9c963e0c273a4f

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