Malicious PDF — malware analysis report

Static analysis result for SHA-256 357293211b268822…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 06:03:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 30a2c160c6221bf666d1fce47e31b2e3 SHA-1: ccac4f864b8720f80472712cb3c454f26d21232f SHA-256: 357293211b268822f7739c5bde8e7c3cd912c025d1c78fa3b545411de8911306
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 designed to appear as legitimate resources for game cheats or currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to direct users to potentially malicious or scam-related content. The ML classifier also strongly flagged this PDF as malicious, reinforcing the assessment of a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/431946152/blox.page-free-robux-game-hack
    • https://library.stikesmi.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/roblox-fly-hack_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/how-to-hack-coin-master_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/free-robux-discord_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/minecraft-for-free-on-phone_GM479516143.pdf
    • https://library.stikesmi.ac.id/repository/best-free-coin-master-spins_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/coin-master-hack-mod-apk-2021_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/robux-free-promo-codes_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/free-coins-for-flip-master_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/roblox-getting-hacked_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/coin-master-free-generator_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/free-coins-for-flip-master-online_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/free-roblox-codes-2021_GM431946152.pdf
    • https://library.stikesmi.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdf
    • https://library.stikesmi.ac.id/repository/cool-minecraft-hacks_GM479516143.pdf
    • https://library.stikesmi.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047aa.bin
2441206990ea11cbf498f126f4e620fc593a89811303529af8e872635fe25bd6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AA 28364 bytes
font_01_sfnt_off0000889b.bin
477bf2ef93abdd264292ffad6df1a1b97b65e35661cdcc3b49278aa82d19b07c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x889B 18848 bytes

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