Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1b5afea87f6a62…

MALICIOUS

PDF

48.0 KB Created: 2021-06-04 04:55:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fb2838347ff79ae39202dc7508b5cd4c SHA-1: d38535a51b32a4039211f114242d92817bdea353 SHA-256: 5f1b5afea87f6a62d7d93d05979f0672fc640529b28ed193451c9ea01fd04c92
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple external links, including one pointing to 'netcdn.online' which is associated with a 'best-hacker-roblox-clothing-game-hack'. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent. The document likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/best-hacker-roblox-clothing-game-hack
    • http://katalog.stikesmukla.ac.id/repository/how-do-you-get-free-roebucks_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdf
    • http://katalog.stikesmukla.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/op-rewards-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-spin_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/robux-win_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-tool-hack_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/25-free-spins-coin-master_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
    • http://katalog.stikesmukla.ac.id/repository/play-minecraft-for-free_GM479516143.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/robuxglobalcom_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005355.bin
e34d6877f31bf9802298efea79f1ffc05b662902d29dc1ddb89b8e8fd66c0c4a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5355 25108 bytes
font_01_sfnt_off00008cb5.bin
abe7a1ae06e204a5d2d4ef0ffb132054bdee91b1ece2b33e396f3293aa40f125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 2996 bytes
font_02_sfnt_off000096f6.bin
d0066ae4ab19e5b36ee9ee9135a58572b14021a18a55ec06329ace0b97e89da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F6 18860 bytes

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