Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff165a0adee0ff6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 16:57:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 96e7b779237262b24bf9c42d30012548 SHA-1: f787a37990fdce1530ed407ac0c5012461e2c7c0 SHA-256: 2ff165a0adee0ff6867d2aa8221b968ee0c1a2d37033449e29211eb62e12ebd4
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 0.9984

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/free-robux-com-2021-game-hack PDF link annotation
    • https://www.zagorjeadventureteam.hr/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-hack-someones-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-get-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-sand-simulator-hack-for-android-2021_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-speed-hack-roblox-with-artmoney_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-fun-free-spins_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_off00003090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3090 22196 bytes
SHA-256: 1aabce05baae074d3ab1825fb44e884792d1ad96d525afeb0293411254b65181
font_01_sfnt_off000061cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 19380 bytes
SHA-256: e4a3050f3e501d111e2505792e6fe17b213487e8f387ded0c09bd9d126917491

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