Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3e7a63a4c65103…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 00:14:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e8e9184dd57a7a4783738c98555d9908 SHA-1: f9b8e20dc0abe4d9d457037ca3b7823a476e0690 SHA-256: 2c3e7a63a4c651031b6deed69130a2b09b469595b3c5b0b2b13542437e2b844f
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/free-coin-master-spin-app-game-hack PDF link annotation
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/ultimate-random-night-how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-for-sale_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-gift-card-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-website-template_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-get-free-robux-without-paying-or-human-verification_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-coins-and-spins-for-coin-master_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_off00002e95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E95 21948 bytes
SHA-256: 70a449076af32e0065671ae5814d790f34434022444563fa8b100aaa109d25d1
font_01_sfnt_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 18176 bytes
SHA-256: c20278108810162b1b694c6666ef9c6da72e60db33a50c207a00b3484d1a6bb3

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