Malicious PDF — malware analysis report

Static analysis result for SHA-256 1989c712e0f743df…

MALICIOUS

PDF

45.3 KB Created: 2021-06-11 03:59:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7ea5609532bb4dff526323ac0b615cdc SHA-1: afac5bc7fd6d3832acff027acf48e0c68c41ff9e SHA-256: 1989c712e0f743dfe6bcc6cb862f92c21f4063ab95c7ed3b882456205f6dacbe
142 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized links for game hacks and cheats. The document body itself contains a lure related to 'Roblox Jailbreak Free Money Hack 2021' and includes a URL pointing to a similar resource. The presence of a 'Clipboard command execution lure' heuristic suggests the document may instruct users to copy and paste commands, a common tactic for executing malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://netcdn.tw/app/431946152/roblox-jailbreak-free-money-hack-2021-game-hack
    • http://ff-klaffenbach.de/images/coin-master-hack-apk-online_GM406889139.pdf
    • http://ff-klaffenbach.de/images/free-roblox-hack-us_GM431946152.pdf
    • http://ff-klaffenbach.de/images/download-coin-master-hack-mod-apk_GM406889139.pdf
    • http://ff-klaffenbach.de/images/codes-how-to-get-free-robux_GM431946152.pdf
    • http://ff-klaffenbach.de/images/minecraft-java-hacks_GM479516143.pdf
    • http://ff-klaffenbach.de/images/how-to-become-a-famouse-hacker-in-roblox_GM431946152.pdf
    • http://ff-klaffenbach.de/images/hack-roblox-players_GM431946152.pdf
    • http://ff-klaffenbach.de/images/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://ff-klaffenbach.de/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdf
    • http://ff-klaffenbach.de/images/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://ff-klaffenbach.de/images/coin-master-free-spins-uk_GM406889139.pdf
    • http://ff-klaffenbach.de/images/minecraft-free-install_GM479516143.pdf
    • http://ff-klaffenbach.de/images/how-to-gift-robux-on-mobile_GM431946152.pdf
    • http://ff-klaffenbach.de/images/minecraft-windows-10-free-code_GM479516143.pdf
    • http://ff-klaffenbach.de/images/how-can-u-get-free-robux_GM431946152.pdf
    • http://ff-klaffenbach.de/images/websites-for-robux_GM431946152.pdf
    • http://ff-klaffenbach.de/images/free-robux-without-verification_GM431946152.pdf
    • http://ff-klaffenbach.de/images/coin-master-free-spins-link-download_GM406889139.pdf
    • http://ff-klaffenbach.de/images/roblox-r2d-money-hack-cheat-engine_GM431946152.pdf
    • http://ff-klaffenbach.de/images/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fb3.bin
66692d0ab15c4ad50e274b45335bf7909379d4383ec26c9e345560f7f661ab60
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB3 25468 bytes
font_01_sfnt_off00008b52.bin
7bf1ba7b95c5cfb913fd12c11687a382a88797aa7483cc5bcc243b9416ed0728
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B52 19412 bytes