Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fe55ce98617500…

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 22:54:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 59aa7e5c7250e6cc808375fefc7bb82b SHA-1: 1d00de50d5e0107f1a3e703f4ebc985ed305a359 SHA-256: a7fe55ce986175001173cbbb7b615c9828382e56b347febf2e19e08deadd4c8f
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.co/app/431946152/how-to-hack-admin-commands-on-roblox-android-game-hack PDF link annotation
    • http://sttlets.education/senayan//repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/fiddler-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-hack-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-robux-free-codes-android-s9_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/make-skins-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-how-to-get-a-gamepass-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-pizza-place-money-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-dominus-roblox-tampermonkey_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/speed-hack-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-online-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-hack-ios-no-human-verification_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_off000032ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EA 22528 bytes
SHA-256: 6bd7b65cd2e75b79a705d0429ba1a8772327fbb426b30cdbd7390be0946218e2
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 19376 bytes
SHA-256: fa457543d3c0ea88cd871adc33874e7d1bc02bd492acaebaae0533936759ed7f

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