Malicious PDF — malware analysis report

Static analysis result for SHA-256 517ae48ced1957f0…

MALICIOUS

PDF

46.9 KB Created: 2021-05-14 14:16:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ff0edd9ee53983b7be15bd5c29a506bc SHA-1: 9c0d7b7cbc08823e181b0172b1a350f1314b86c9 SHA-256: 517ae48ced1957f0d84660a7aa03e9064a830f0c095de1bfbba9f845e9e12ab9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to game hacks and cheats, indicating a lure for potentially malicious content. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and a link farm suggests an attempt to redirect users to external sites that likely host malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/coin-master-hack-club-game-hack
    • https://www.gejovenlo.nl/images/roblox-sued_GM431946152.pdf
    • https://www.gejovenlo.nl/images/monttechscom-coin-master-free-spins_GM406889139.pdf
    • https://www.gejovenlo.nl/images/free-roblox-generator_GM431946152.pdf
    • https://www.gejovenlo.nl/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://www.gejovenlo.nl/images/what-is-exploiting-in-roblox_GM431946152.pdf
    • https://www.gejovenlo.nl/images/hack-the-coin-master-game_GM406889139.pdf
    • https://www.gejovenlo.nl/images/coin-master-pc-hack-download_GM406889139.pdf
    • https://www.gejovenlo.nl/images/coin-master-spin-pattern_GM406889139.pdf
    • https://www.gejovenlo.nl/images/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • https://www.gejovenlo.nl/images/robux-place-rewards_GM431946152.pdf
    • https://www.gejovenlo.nl/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://www.gejovenlo.nl/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
    • https://www.gejovenlo.nl/images/robux-link_GM431946152.pdf
    • https://www.gejovenlo.nl/images/aristois-minecraft-hack_GM479516143.pdf
    • https://www.gejovenlo.nl/images/how-to-get-free-robux-generator_GM431946152.pdf
    • https://www.gejovenlo.nl/images/free-coin-master-spins-2021-link_GM406889139.pdf
    • https://www.gejovenlo.nl/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • https://www.gejovenlo.nl/images/mcmaster-club-coin-master-hack_GM406889139.pdf
    • https://www.gejovenlo.nl/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • https://www.gejovenlo.nl/images/how-to-actually-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b35.bin
e2155d28b12543cf1b0e7ecf8794554490974141297c66af3664203856900682
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B35 28916 bytes
font_01_sfnt_off00008bad.bin
381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAD 2824 bytes
font_02_sfnt_off00009550.bin
489fcd50e077ea385706302a414b20846aa2690c2d534c5e871bb508b565cca7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9550 18088 bytes