Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e09b7422ac156e…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 17:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fe68c00502d8db83ccc26297bf612e46 SHA-1: 2c5b5b27cbfa870909cf561747ebed55f8759b72 SHA-256: 88e09b7422ac156e8db9e84e3e88d57ac746cf4c54f5de4baa228243a17d4f7c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was identified as malicious by an ML classifier and contains a large number of external links, many of which point to SEO-optimized PDF files related to game cheats and free spins. The document body, though partially corrupted, contains URLs that suggest a lure for Coin Master and Roblox cheats. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to potentially harmful content, likely for credential harvesting or 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.tw/app/406889139/coin-master-free-spins--spins-game-hack
    • http://stiepariperpus.web.id/sarjana/repository/free-coin-master-credit_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-cheats-deutsch-pc_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-without-human-verification-india_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-cheat-codes-for-robux-2021_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-with-out-hacking_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-robux-codes-wiki_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-jailbreak-free-radio_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/online-hacking-tricks-coin-master_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-hack-2021-pc_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-play-online-for-free-no-download_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/piano-cheat-roblox_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-adopt-me-money-cheat-engine_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-working-hack_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-change-roblox-name-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035e9.bin
1b6a1faf6c0556357b081386008922a05852a9a14ab070f8ff804932dc17a064		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35E9 22804 bytes
font_01_sfnt_off000068b6.bin
c90cd52c690b3b1dd04b69356ad4f8db221968fb130a3d2ff71dcd50323a1a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B6 18176 bytes

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