Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb811465b0e314e…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 15:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bde11453fa68125029510407f667373b SHA-1: aad4df447d4dfa945ddf2d7c38e1cd1326587860 SHA-256: dcb811465b0e314ea4663bca2225a9b364aac313c981c36096abad66fb74dd89
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, that point to websites offering game hacks and cheats. The primary external URI, https://netcdn.xyz/app/431946152/roblox-free-wings-game-hack, further supports this. The document's structure and content suggest a lure to download potentially malicious files or engage in phishing activities. No scripts were extracted, but the extensive link farm indicates a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-free-wings-game-hack
    • http://olimpik.mk/imagescke/upload/files/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://olimpik.mk/imagescke/upload/files/hacks-to-get-free-robux_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-coins-hack_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-2021-without-verification_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/minecraft-hack-app_GM479516143.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/free-robux-ad_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/minecraft-free-download-windows-10_GM479516143.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spins-2021-haktuts_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/robloxfun-com-robux_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/collect-free-spins-for-coin-master_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/moonactive-coin-master-hack_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/free-robux-live_GM431946152.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-2021_GM406889139.pdf
    • http://olimpik.mk/imagescke/upload/files/minecraft-education-edition-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004819.bin
5f78361d0bcc78828003936a4af7ead08ad22e6b8dc12a64f56f896da00d4c76
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4819 27132 bytes
font_01_sfnt_off0000847b.bin
0c6b1e6d5af6e71a5f717763afec74d9fa5a47fcdd63102494205ccdca690211
pdf-font-stream PDF embedded font (sfnt) at offset 0x847B 18556 bytes