Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f7bef299f109cb…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 00:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0ecf2efdd34d1f6987f9817a97b82794 SHA-1: 177b2dc35d8592e7a75fc061ab3e0b7063a7355d SHA-256: c6f7bef299f109cb5937a429d168e2212c28348a8ca077c126c4471207cecb25
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 0.9971

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.xyz/app/406889139/coin-master-hack-version-apk-download-game-hack PDF link annotation
    • http://kishplus.ir/images/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/gain-robux_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://kishplus.ir/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/robux-generator_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_003_off000048cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CF 25184 bytes
SHA-256: 5851b1e10c8eea48881072468a986fd767b14a8c9cb1371ee0c8a403aa794a7c
font_01_sfnt_off00008301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8301 18608 bytes
SHA-256: 1dc11e7f68bd978fc0a92f78b05146ad1c6754ecfa484bd6206fefa9f56aad89

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