Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0bcebeae7a9f8f…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 06:52:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5974a80a13068070423718b2aa2ac237 SHA-1: 7e5b298eb5c23309c5b0779b0143b4bb0a058ae3 SHA-256: 4e0bcebeae7a9f8f90533d108e7ab7a0820ace47622ca6b3de111a7b414abe46
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, a common tactic for redirecting users to malicious websites. The 'ML_NYX_PDF_MALICIOUS' heuristic and the presence of a large number of external links, as indicated by 'PDF_SEO_LINK_FARM', strongly suggest malicious intent. The document body, though partially corrupted, contains a URL that appears to be a lure for a game hack, further supporting a phishing or malware distribution scenario. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-xyz-game-hack
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-hack-coin-master_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/free-minecraft-gift-codes_GM479516143.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-spin-blogspot_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-discord_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/minecraft-116-free-download_GM479516143.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-earn-robux-on-roblox_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/best-free-robux-sites_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/coin-game_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/bux-gg-robux-free_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-coin-master-hack_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdf
    • http://pengolahan.perpus.wima.ac.id/repository/buy-robux-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005388.bin
0841088c5c4ed94500d1a06feab9908daf65795e5bc6f39c316184b69bbfa12c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5388 24676 bytes
font_01_sfnt_off00008a79.bin
eb378c11d4c3edf43fd4a317fe896922564aeaa66921672c4d59ab66e1a3bbf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A79 18204 bytes

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