Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee792b401f419f44…

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 13:30:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 477ce1abc9df43d57925ef8c0e31c57e SHA-1: 5994245f3cb50c52c38d9a01cb0dbc83cea5d8ac SHA-256: ee792b401f419f44c6cc6075bf98f778fdad7114900e6192fefe6d40c7142f6d
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 SEO-optimized and point to resources related to game hacks and cheats. The primary URL, http://netcdn.tw/app/431946152/oprewards-com-earn-game-hack, is likely a landing page for downloading malicious content. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution attempt.

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/431946152/oprewards-com-earn-game-hack
    • https://fib.ub.ac.id/sac/repository/how-to-get-powergrip-gauntlet-in-parkour-roblox-free_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-with-inspect-element-2021_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/free-robux-no-human-verify_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-clothes-on-roblox-games_GM431946152.pdf
    • https://fib.ub.ac.id/sac//repository/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://fib.ub.ac.id/sac/repository/external-roblox-jailbreak-hack-2021-download_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/free-roblox-injectos_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-run-faster-in-roblox-hack_GM431946152.pdf
    • https://fib.ub.ac.id/sac//repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
    • https://fib.ub.ac.id/sac/repository/infini-speed-roblox-cheat_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-ios-2021_GM406889139.pdf
    • https://fib.ub.ac.id/sac/repository/free-pet-roblox-pet-simulator_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-scar-h-free-in-phantom-forces-roblox_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/hackeando-ordenadores-en-roblox_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • https://fib.ub.ac.id/sac//repository/minecraft-pocket-edition-free-apk_GM479516143.pdf
    • https://fib.ub.ac.id/sac//repository/minecraft-cheat-client_GM479516143.pdf
    • https://fib.ub.ac.id/sac/repository/coin-master-links-for-today_GM406889139.pdf
    • https://fib.ub.ac.id/sac/repository/free-roblox-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc1.bin
257385285c4e41a05b32ff91a413fb569e2f179ccbc7a99aa95c61a520ef0fd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC1 22376 bytes
font_01_sfnt_off00005faf.bin
98371626da931bbeb902ee9c6a395854158c625b387237cb0e05488af2fd1844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 18820 bytes

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