Malicious PDF — malware analysis report

Static analysis result for SHA-256 963fff22e17ce919…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 14:48:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2ff35e2493f837c1429dc45d4cde4140 SHA-1: 0985e2e6d5449d5df43d62e61a8819ea083c2722 SHA-256: 963fff22e17ce91926de82bb29c1c8858aba34439db0fb46f414429c88cbe042
100 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically targeting users interested in game cheats and hacks. The ML classifier also strongly flagged this PDF as malicious. The presence of a visual download button further supports the lure, aiming to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-how-to-noclip-with-cheat-engine-6.4-game-hack In PDF document text
    • http://www.manchieu.vn/upload/editor/files/html-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/roblox-hack-for-10-robux_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/roblox-no-verification-hack_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/god-mode-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-no-card-roblox-card_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/best-apocalypse-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/tiktok-free-mockup_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000304e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304E 23060 bytes
SHA-256: e924b6d5d74c8e3d90ada1b8e2c527e23d06b94c108e033092c2301e248233e8
font_01_sfnt_off00006421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 19712 bytes
SHA-256: b271f10cac772bab7d4ae470adac9d4dbb9a45a18d6d51cbf9f08a89f281e827