Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64916dcd7c56c5f…

MALICIOUS

PDF

46.6 KB Created: 2021-05-19 05:38:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5d172a2576d71e8db8507aaef834f443 SHA-1: e7865aa32a6f6d5bdd83628ff92552926e91d319 SHA-256: d64916dcd7c56c5f31cbdd13660b51f0bf1cb71d4d4b4cf4a1d79b2c97daa9c4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links. The primary URL and many others point to sites offering game hacks and cheats, suggesting a lure for users interested in such topics. The presence of a visual download button heuristic further supports the idea that the document is designed to trick users into clicking through to potentially malicious 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/1330123889/offer-for-pubg-uc-game-hack
    • http://pythonbikers.de/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdf
    • http://pythonbikers.de/images/free-rare-cards-for-coin-master_GM406889139.pdf
    • http://pythonbikers.de/images/free-robux-websites-that-work_GM431946152.pdf
    • http://pythonbikers.de/images/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://pythonbikers.de/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://pythonbikers.de/images/minecraft-xbox-360-free-download-code_GM479516143.pdf
    • http://pythonbikers.de/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • http://pythonbikers.de/images/how-to-gift-robux-on-mobile_GM431946152.pdf
    • http://pythonbikers.de/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://pythonbikers.de/images/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://pythonbikers.de/images/minecraft-free-games-no-download_GM479516143.pdf
    • http://pythonbikers.de/images/free-robux-without-verify_GM431946152.pdf
    • http://pythonbikers.de/images/free-robux-only-1-step_GM431946152.pdf
    • http://pythonbikers.de/images/coinmaster-free-spins-link_GM406889139.pdf
    • http://pythonbikers.de/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://pythonbikers.de/images/coin-master-hack-no-human-verification-2021_GM406889139.pdf
    • http://pythonbikers.de/images/ww-roblox-come_GM431946152.pdf
    • http://pythonbikers.de/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://pythonbikers.de/images/roblox-hair-for-free_GM431946152.pdf
    • http://pythonbikers.de/images/coin-master-free-spins-2021-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004628.bin
1def96e596d4c93c0d46778681297f17e96b5bd49d2f290f8a5f9669d0edf4e5
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4628 29400 bytes
font_01_sfnt_off00008a30.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A30 2824 bytes
font_02_sfnt_off000093df.bin
c2f9b982ce16f489dd0f16cb5134332e6d2f12885600d4382dc1065284033d6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x93DF 18204 bytes