Malicious PDF — malware analysis report

Static analysis result for SHA-256 377a38339ff0c56b…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 07:42:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dc5a95aec088b2a7b828f661ca3581f2 SHA-1: 80236116b49d07c12f8a5a82e6c7c559c440a6be SHA-256: 377a38339ff0c56b06b42dce0cb8d6a8eb3c313cb2887dab10202f05777d3e20
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous embedded URLs and a document body that explicitly promises game hacks and cheats, indicating a phishing or malware distribution lure. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of external URIs and the nature of the lures suggest an attempt to download a second-stage payload.

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/how-to-hack-roblox-with-proxy-game-hack
    • http://www.myresidence.lu/userfiles/files/how-to-hack-piano-in-roblox_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-free-items-glitch-2021_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/pokemon-go-free-yveltal_GM1094591345.pdf
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdf
    • http://www.myresidence.lu/userfiles/files/how-to-hack-in-roblox-accounts_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-sword-reach-hack_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-elemental-battlegrounds-gems-hack_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-robux-hack-no-download-2021_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-robux-games_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-chill-cap-roblox_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-bss-hack_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-free-auf-poki_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdf
    • http://www.myresidence.lu/userfiles/files/80-free-spins-coin-master_GM406889139.pdf
    • http://www.myresidence.lu/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdf
    • http://www.myresidence.lu/userfiles/files/roblox-hack-me_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-robux-com_GM431946152.pdf
    • http://www.myresidence.lu/userfiles/files/free-robux-obby_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003002.bin
70c4ebe9c9c6ffc1de4a4fe3223f1fecd4055bcce86b0afebb7c186bed34e18a
pdf-font-stream PDF embedded font (sfnt) at offset 0x3002 22428 bytes
font_01_sfnt_off000061b7.bin
4a164743dab29ea9d3ddcb79362b9deeb001ba30a927d42b17edffcf40b5d1c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 19740 bytes