Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e85bbb0eab5549…

MALICIOUS

PDF

44.5 KB Created: 2021-06-01 00:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 266e6f74efdfe8f4f6d01f6c642b34bb SHA-1: 9173242c1f376bf272592835c6d181684ec7d8e9 SHA-256: 24e85bbb0eab554999ef46357c2db24a7a2f6a9082e3ac46fc3956807ed8cf6d
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.xyz/app/431946152/juego-de-roblox-hecho-por-un-hacker-game-hack PDF link annotation
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-roblox-scibt-pack-exploit_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-online-play-roblox_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/roblox-hacks-xray-2021_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/earn-roblox-online-free_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/roblox-mad-city-free-money_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/studio-free-10-000-robux-lim_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/roblox-jailbreak-hack-2021-april_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/how-to-hack-injustice-roblox_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-robux-how-to_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-coin-master-coins_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_off00004f85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F85 24548 bytes
SHA-256: 84e2eb2b1f617d011baec457ea2149ba624791bde12b984c75a4536fd29560cf
font_01_sfnt_off000087e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E9 19448 bytes
SHA-256: 651f0fddaced37a910136f16f12d9cd9c6dab294f0fbf8216e769e82b433a310

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