Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcc16df8cec4347…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 15:37:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5dc134dc46f54c71251b5da2892cbc24 SHA-1: 30fffa2ce6e21c40c6c279c7a7978873aea65297 SHA-256: 4fcc16df8cec4347ae4974f3bef1727299f55cb0b91da7ff414500f77ae01085
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 0.8948

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-free-spins-and-coins-hack-game-hack PDF link annotation
    • http://keycitykennelclub.org/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://keycitykennelclub.org/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://keycitykennelclub.org/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/freecoins_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://keycitykennelclub.org/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://keycitykennelclub.org/images/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://keycitykennelclub.org/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://keycitykennelclub.org/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F7 28200 bytes
SHA-256: ee439dafb278f83680f1bf3b40d488231ad288620fb089c760e8b9edc5c8aa3c
font_01_sfnt_off00008960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8960 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000934b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934B 18228 bytes
SHA-256: 968d77e43c6b0b1c299d9da4b9fdaa5840c103d7fe58a67c77b67690964fdfdc

Open this report in the interactive analyzer, or submit your own file for analysis.