Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c128292d1c10d9a…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 15:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ed29dfebaba22bb7a7d0c270f609aecb SHA-1: cc8b9d03f5af343eda845ab94ca5cae4d9a59dc3 SHA-256: 4c128292d1c10d9acbcd39f0618da410695beed2d3cdaee97f5acf3c2ed03a56
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/431946152/roblox-robux-hack-generator-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-site-simplesite_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/can-i-get-free-robux-please_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-skins-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/actual-hack-generator-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-coins-blogspot_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
font_00_sfnt_off000032c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C6 22488 bytes
SHA-256: 63998a4b80e1d688d433b494743be7cc05a94fde712bbd50ed220ae49b6b39c4
font_01_sfnt_off0000651f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651F 18900 bytes
SHA-256: e419110d4009e271ea11aee689c1aa7fe2ca079d33d0815bd6a59eb0f8b0c4e6

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