Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7e15959308d8ab…

MALICIOUS

PDF

45.7 KB Created: 2021-06-07 05:54:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2c4cede6f274d0e687d1a2b5e19bb518 SHA-1: d70b45b6fc1313b7e4f1c7d56d49417ff68268ba SHA-256: ca7e15959308d8aba907f08fb2517d460cf2c049e056f244d96d2fe4539035c1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains numerous embedded URLs pointing to sites offering game hacks and cheats, strongly suggesting a lure for users to download malicious files. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a "download button" heuristic further supports the malicious intent of tricking users into executing harmful content.

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.tw/app/431946152/griffin-that-gives-free-robux-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-apk-35-13_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_off000053cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53CF 25804 bytes
SHA-256: 0add83770c9801c8d4509ec6b8a1827e5669089bd91b22710afd24ec1baf3a2d
font_01_sfnt_off00008e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E93 18748 bytes
SHA-256: be72387e5b6a8372f53fede3cca1b341f264abd7a2d67d830b194a98132fc9a0

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