Malicious PDF — malware analysis report

Static analysis result for SHA-256 60115a7f06776e04…

MALICIOUS

PDF

35.9 KB Created: 2021-06-25 20:31:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4f8e7e9b8b5b19cba16f8025ad0edddc SHA-1: f52b78618c1ab5171c4217c0f55bbdece6d71352 SHA-256: 60115a7f06776e0406629b411bb20cd9c98c64b49fb658d8c78b7d2c39b8646b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The ML classifier also flagged the PDF as malicious with high confidence. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting a site that likely hosts further malicious content or exploits.

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.co/app/406889139/master-coin-free-spin-daily-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/free-robux-pin-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-trolling_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-5-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/uirbx-club-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/cheats-glitches-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/get-800-robux-for-free-gamekit_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-no-human-verification-on-android_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_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
font_00_sfnt_off000036c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C8 22496 bytes
SHA-256: 99d9418ca24f87d26e6f99dfcdd1fe111ac6a2518de5f4b8737f67096db4da22
font_01_sfnt_off000068f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F4 18596 bytes
SHA-256: 115892fac058e21728dd73f14dd50efb9625691fb0bdc47d6e9343c2bb96a73b

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