Malicious PDF — malware analysis report

Static analysis result for SHA-256 98da28ab5830f0bf…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 13:31:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a9bf24cf6c8006b634f7e439d26ff7b3 SHA-1: a22b873eb8e0fa04e8c903cc534d40084f6ff38b SHA-256: 98da28ab5830f0bf6adda219f7187df5e712a48a69f175528512b7d2c7e3c0fb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple embedded URLs and a call-to-action phrase, suggesting a phishing or social engineering attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to a raw IP address, indicates an attempt to redirect the user to malicious content. The document body and extracted URLs focus on game-related cheats and free currency, a common lure for such attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-in-roblox-2021-jailbreak-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/www-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-roblox-hack-free-robux-generator_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-daily-free-link_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/rewards-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/pokemon-go-free-offers_GM1094591345.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-unlimited-robux-with-cheat-engine_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-pink-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-free-phantom-forces-account_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/game-coin-master-hack_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-daily-gifts_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/dominus-roblox-free_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/password-free-roblox-accounts_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-hack-apk-download_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-hack-roblox-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_off00003031.bin
1ea5c6cbba00f98bce49a45c4ae692cacc5995cb7f93765c21fca7d0685abf11
pdf-font-stream PDF embedded font (sfnt) at offset 0x3031 22568 bytes
font_01_sfnt_off000062ab.bin
89b093f45d5aecac01d8ada0f6e63c3fe203a1f8f45a2ff08b523e9aa9830f3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 19508 bytes