Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0c3cb0af89bfcc…

MALICIOUS

PDF

40.8 KB Created: 2021-05-14 20:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2357736e2fd57a95163d22eb88a63a1a SHA-1: abcc6351a163408d69d72887fde5f5b659c4aed7 SHA-256: 8d0c3cb0af89bfcce842ffa3464bf7030971a93bca6c64c976d8c8919d8d39dd
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/free-coin-spin-game-hack PDF link annotation
    • https://www.beaufortcollege.ie/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.beaufortcollege.ie/images/free-robux-stream_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_off0000479f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479F 24372 bytes
SHA-256: db646598ba0ec267513fba739c2b0e986ef06f779dc70b51b2483a9a60c193c1
font_01_sfnt_off00007f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 17552 bytes
SHA-256: f6733490f9e98ac1c6d381232fcc744520aff3fd481443809f2500373f365ecc