Malicious PDF — malware analysis report

Static analysis result for SHA-256 805f0e2db75583f6…

MALICIOUS

PDF

33.9 KB Created: 2021-06-28 05:45:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd39278e49e9fd8c6290113e86145046 SHA-1: 7b9b0a72be777533654be79f3efefbd61849e4e5 SHA-256: 805f0e2db75583f6a3ca697a2a86758a56417c491263712b817f5fa724739db6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links to external resources, many of which are SEO-optimized PDF slugs related to game hacks and free in-game currency. The document body explicitly contains a call to action, 'CLICK HERE TO ACCESS ROBUX GENERATOR', and an embedded URL pointing to a potential download. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to deliver a secondary payload or lead users to a phishing site.

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.co/app/431946152/diary-of-a-roblox-hacker-game-hack
    • https://opac.umrah.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
    • https://opac.umrah.ac.id/repository/give-free-robux_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/free-account-generator-roblox_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/how-to-get-robux-easy_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/roblox-redeem-card-hack-pin_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/roblox-hack-email_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/free-robux-codes-2021_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/hack-card-collection-coin-master_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/coin-master-download_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/get-free-robux-today-com_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/roblox-how-to-change-your-username-for-free_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/coin-master-coin-link_GM406889139.pdf
    • https://opac.umrah.ac.id/repository/roblox-free-draw-2-script-pastebin_GM431946152.pdf
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-reddit_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fbf.bin
abf3a2a356bd0bd59e80d805f8b8f65a9b296e1d0b33fddffcbdeb914a88c403
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBF 21592 bytes
font_01_sfnt_off00005f07.bin
8225875ede7ec042a2035379a32be76d176239d2802186a94cef9e0bde564ed5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F07 19124 bytes