Malicious PDF — malware analysis report

Static analysis result for SHA-256 367d8dd43743a98c…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 01:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 54d9a52b7775c04df2da99b265d08b34 SHA-1: 510fad6a58e6ada9ce8bb06e51ec0678091a92df SHA-256: 367d8dd43743a98cda22133a704cda3efe5eac12b08f32e10ddd14e87ae7edd0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and free in-game currency, suggesting a phishing or scam lure. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports this. The document's content and structure are designed to trick users into clicking malicious links, likely leading to malware downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.tw/app/406889139/hack-coin-master-free-spins-game-hack
    • http://perpus-baitulhikmah.esy.es/akasia/repository/roblox-get-free-robux-2021_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/how-to-hack-money-in-roblox-rocitizens_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/roblox-redeem-card-codes-free_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/how-to-get-free-robux-no-verification_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/roblox-free-view-camera_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/coin-master-20-free-spins-link-2021_GM406889139.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/minecraft-free-install_GM479516143.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/roblox-but-everything-is-free_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/earn-free-robux-scam-sites_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/daily-coin-master-free-spins_GM406889139.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/how-to-free-robux-codes_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/free-robux-live-now-2021_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/how-to-hack-into-someones-roblox-account-2021_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/coin-master-hack-using-cheat-engine_GM406889139.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/hacks-roblox-car-radio-codes_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/hacks-for-ninjamaster20211-roblox_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/i-want-to-break-free-roblox_GM431946152.pdf
    • http://perpus-baitulhikmah.esy.es/akasia/repository/how-people-hack-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003088.bin
83846944704b3731d140e3659ff623bf589f34352f10177a1ade20de5edb6c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3088 23016 bytes
font_01_sfnt_off00006440.bin
b719b9ed07640e3019d175b5875a3ac233088e4e0000cfcd6dccfc2cfac1c44f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6440 18344 bytes

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