Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8dbbf88b1fc815e…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 12:54:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83ebd7498dd8631102290a9d6d86215d SHA-1: 69cdb8d41683157efdd6424f77e02470a4ac74d0 SHA-256: d8dbbf88b1fc815e9dcdb6fe8bb129ba60a53aff713deba7551e0cc485b568c8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and a visual download button, suggesting it is designed to trick users into downloading a malicious file. The document body, though heavily obfuscated, contains references to game hacks and free spins, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/multiplayer-master-hack-coins-game-hack
    • http://lib.teknik.unimal.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://lib.teknik.unimal.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdf
    • http://lib.teknik.unimal.ac.id/repository/pokemon-go-free-high-level-account-hack_GM1094591345.pdf
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://lib.teknik.unimal.ac.id/repository/juego-hackeado-de-coin-master_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id//repository/get-robux_GM431946152.pdf
    • http://lib.teknik.unimal.ac.id//repository/daily-free-spins_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/free-roebucks_GM431946152.pdf
    • http://lib.teknik.unimal.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id//repository/coin-master-links-to-get-free-spins_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/pubg-600-uc-in-pakistani-rupees_GM1330123889.pdf
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id//repository/hack-coin-master-game-download_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://lib.teknik.unimal.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdf
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spin-reward-links_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004cb9.bin
ca2af340c32b1abfb6ba6402749219463e1d072719941a420d3ed0a1538a191b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB9 25128 bytes
font_01_sfnt_off00008620.bin
8be92bc02ca1dc41f647ca293a0a67ba927c3c923ba3299334502824a8ed5f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 18288 bytes

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