Malicious PDF — malware analysis report

Static analysis result for SHA-256 8828fffe4114447c…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 07:22:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dee0559fa2335a1f4eb2ee3da77ad7e0 SHA-1: 21092695ba32d33cc44f07bd7d8f95a5c0b22f84 SHA-256: 8828fffe4114447cc22c0a8861b1dbace74b628befcb350c54f83c2abec4cd52
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 0.9865

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.online/app/406889139/best-site-for-free-coin-master-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-links-2021_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_004_off0000528a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528A 25792 bytes
SHA-256: 3992e843e13d02a3abb9ae393c761bcc45f5112abf0d2a8502998da6038cfb20
font_01_sfnt_off00008dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC7 17924 bytes
SHA-256: 54ba583de7ef6a44d3440287f67bc1236d632228fc17eebf6d790bd3337eaafd

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