Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c152e3e612fd14…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 06:02:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 61898b9f880ce582e2eb60d35a32f40a SHA-1: 0b6bc6d8b76df8de5ab25f0c5b73df2b6009b51c SHA-256: 44c152e3e612fd1467f3214a15b11e7a7facea2d87850e56ae2b992c0f91fa8a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link in the document body, all related to obtaining free Robux or game hacks. The heuristic firings indicate the presence of external URIs and a general ML classification of maliciousness. The document body, though partially corrupted, contains text and URLs that strongly suggest a lure for a phishing or scam website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/how-to-get-free-robux-gift-cards-game-hack
    • http://digilib.uim.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdf
    • http://digilib.uim.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/pokemon-go-free-movement_GM1094591345.pdf
    • http://digilib.uim.ac.id/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • http://www.digilib.uim.ac.id/repository/free-robux-mobile_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/get-free-robux-no-verification_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/how-to-get-robux-easy_GM431946152.pdf
    • http://digilib.uim.ac.id/repository/free-robux-thumbnail_GM431946152.pdf
    • http://digilib.uim.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdf
    • http://digilib.uim.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdf
    • http://digilib.uim.ac.id/repository/give-me-free-robux_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdf
    • http://www.digilib.uim.ac.id/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdf
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://digilib.uim.ac.id/repository/minecraft-world-free-download_GM479516143.pdf
    • http://www.digilib.uim.ac.id/repository/free-robux-come_GM431946152.pdf
    • http://digilib.uim.ac.id/repository/robux-fun-hack_GM431946152.pdf
    • http://www.digilib.uim.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdf
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052b0.bin
b99979f8930943f32e183e5e1c582e07882e607a944c3e9fe3bbbf4add37fe1b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B0 25024 bytes
font_01_sfnt_off00008c86.bin
db707177e1a0df533614fd289cf2b470ee37edf039339bb568c3977480a042bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C86 18804 bytes

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