Malicious PDF — malware analysis report

Static analysis result for SHA-256 da17f735feb9ed77…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 06:26:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 81325bdd8030561cb3635bdef6e63fe3 SHA-1: 9ab67532135d4a52da281d3bf1999b78ab14ad25 SHA-256: da17f735feb9ed779b46db95821e4064191a9272fb3cc3a2e95a8c7603b3fd05
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-friendly PDF links, suggesting a link farm. The primary URL, https://netcdn.online/app/431946152/free-robux-gen-game-hack, combined with the document body mentioning "Free Robux Gen", indicates a lure for potentially unwanted or malicious downloads. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/free-robux-gen-game-hack
    • http://perpus.fisip.unnur.ac.id/repository/minecraft-116-free-download_GM479516143.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-apk-android_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/master-coin-hack-app_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-new-cards-hack_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/roblox-its-free_GM431946152.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://perpus.fisip.unnur.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdf
    • http://perpus.fisip.unnur.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/robux-get-com_GM431946152.pdf
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdf
    • http://perpus.fisip.unnur.ac.id/repository/free-spin-coin-master-link-today_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/free-pet-food-coin-master_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/blox-fish-free-robux_GM431946152.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coinmasterhack-club_GM406889139.pdf
    • http://perpus.fisip.unnur.ac.id/repository/minecraft-free-no-virus_GM479516143.pdf
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005262.bin
18ccdb795838cb222e60c73c5a55e3dde8343f8d260df58c1080035923de344c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5262 24300 bytes
font_01_sfnt_off000089f5.bin
64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F5 3884 bytes
font_02_sfnt_off0000969d.bin
b822dfaf3b200acc051a64c4c7a9b8bc6e1a7e93aa10f3c17b5d396512734dd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 18012 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.