Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f35f6b3490a0ad…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 20:36:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 91f17f6e68749e862c126161992c21d9 SHA-1: 1a0a0596f71496e5c459cc7656f7211f958fa6ec SHA-256: 17f35f6b3490a0ad00906e22997e6b63a0e0f498628846ddaa88ba230fcf6078
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text related to hacking and obtaining free in-game currency for games like Roblox. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect users to malicious sites. The document body, though partially garbled, reinforces the theme of exploiting games, likely as a lure for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/comment-hacker-site-www.robux.gg-game-hack
    • http://lib.fekon.untad.ac.id/repository/free-roblox-catalog-items-pastebin_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-co_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-do-you-get-free-shirts-on-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-how-to-use-nebula-exploit-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/fly-hack-for-strucid-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/website-to-hack-roblox-accounts_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-bobux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-1m-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-box_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-into-someones-roblox-account-on-phone_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/hack-roblox-block-piece-autofarm_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/black-t-shirt-free-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-ip-address-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-roblox-pin-codes_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-ios-jailbreak_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc1.bin
b7ef97c22c492067244afff703d1a3a374f46d9e98af1d8284a59ee6c5929d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC1 21836 bytes
font_01_sfnt_off00005fda.bin
f6ddd3b667e7be5a101ba680906fadb075a533b6311dcc187fa80161f77c2f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDA 19636 bytes

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