Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c58ceffffdebc4…

MALICIOUS

PDF

34.1 KB Created: 2021-06-25 08:38:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5efea8f089f2942293a998bdb2fb207d SHA-1: 339bd61b5565a6fc487f4f0bcf2676e2cd8ed389 SHA-256: 37c58ceffffdebc45ee8e40ccc072e4fe391eb25664129b5e09cb75bdfc310c8
122 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacking and exploits, suggesting a lure to download malicious content. The presence of a download button lure and callback phishing indicators further supports a malicious intent. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-is-using-cheat-engine-hacking-game-hack
    • https://digilib.widyagamahusada.ac.id/repository/roblox-hack-pets-simulator_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-roblox-accounts-ios_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/get-me-robux-for-free_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-gamepasses-in-roblox_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-roblox-items-for-free-2021_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-2021_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/hack-jailbreak-roblox-teletransporte_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/roblox-how-to-get-free-codes-group_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/sonic-shirt-roblox-free_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/levvvel-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-game-free-spin_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-coins-free_GM479516143.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-coins-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec0.bin
d587f160122abdea3bede2083a8d0ccd9df2e8cdd2f10b63360405628fa4d377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC0 22328 bytes
font_01_sfnt_off00006055.bin
71b1627ee948340f76dcdd043384723a02fb6d482e3690c736b7dafda7b1662a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6055 19044 bytes

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