Malicious PDF — malware analysis report

Static analysis result for SHA-256 6890c8edc3fdeda1…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 22:23:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 97f687650407d1a6995ff2641c9f5ff0 SHA-1: 96998fccf0dac3063ac752e0a26723aa46af2ba3 SHA-256: 6890c8edc3fdeda1505db1e17069e0a3651d4023576097f3220244c5ab5451cf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links and a document body that promotes free game currency and hacks for popular games like Roblox and Minecraft. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high, suggesting malicious intent. The primary attack pattern involves luring users to click these links, which likely lead to phishing sites or further malware distribution.

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.co/app/431946152/robux-party-com-for-robux-free-game-hack
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-java-edition-free-trial_GM479516143.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/https-roblox-robux-hack-2021_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/free-minecraft-account-and-password-generator_GM479516143.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/how-to-speed-hack-on-roblox-2021_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-free-minecoins_GM479516143.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/tryrbx-site-free-robux_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/non-blocked-cheat-engine-roblox_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/best-free-exploit-roblox-2021_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/flying-hack-in-roblox_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-best-exploit-cheat-ever_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/claim-your-free-roblox-game_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-http-robux-codes_GM431946152.pdf
    • http://polycraft.ae/uploaded_files/userfiles/files/free-roblox-scam-messages_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f96.bin
3d9623e07394895a3e0998ed0d4ccc12971f3de94a03dcff509d7bb3757e9ebd
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F96 22716 bytes
font_01_sfnt_off00006265.bin
feb5d2040c29c8e93d11da0c9fecbee3f41ba88d1d79dfca7269031ba750aab2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6265 19416 bytes