Malicious PDF — malware analysis report

Static analysis result for SHA-256 216417a06cc0af4c…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 14:28:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 680483265a068f59b8f3a6afa68be05c SHA-1: 89780c7f4198ff1f17eb2d3a92bec974559ce653 SHA-256: 216417a06cc0af4c2bcd85c71c9a304e86c750d1c514f16768792cc49024ad24
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a lure to download further malicious content. The ML classifier also flagged this PDF with high confidence. The primary URLs point to sites offering game hacks and rewards, indicating a social engineering tactic to entice users to click and download.

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/431946152/robux-rewards-game-hack
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/wurst-hacked-client-112-2_GM479516143.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-robux-without-games_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/is-minecraft-vr-free_GM479516143.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-get-free-item-in-roblox-2021-pastebin_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-hack-in-any-roblox-account-2021_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/control-people-hack-roblox_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/roblox-how-to-get-a-free-name-change_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-coins-app-for-coin-master_GM406889139.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/redeem-roblox-cards-free-codes-2021_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-official-fan-page_GM406889139.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/roblox-4all-cool-roblox-hack_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/can-i-cheat-on-roblox-vip-servers_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-hack-online-generator_GM406889139.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/avatar-animation-free-roblox_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/roblox-how-to-get-free-in-game-items_GM431946152.pdf
    • http://wwlogistic.net/uploaded_files/userfiles/files/200-free-spins-coin-master_GM406889139.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003133.bin
bbd8e2adb6aa8346d997bb1dc5d0463664f94a3907b6c24e1883ecbc88d33606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3133 22732 bytes
font_01_sfnt_off00006425.bin
d95cefb3006d4ef95e53ac5fbb5a8f11cbb58a942c42ee634b0bbfc1c40180b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6425 18888 bytes

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