Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4a1b37e66ae9e84…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 16:39:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0942c35d373daac30270c59e95b36700 SHA-1: ff10e3e4f5b3beb62d386a9af2e87c52f2ed15dd SHA-256: b4a1b37e66ae9e849e8d919ac3c5f9a640d59e632ceb6f4646152c43680f7824
102 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which are related to obtaining free in-game currency or hacks for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly suggests maliciousness. The document body, though partially corrupted, contains phrases like 'Free Robux Codes On Iphone' and includes URLs that likely lead to phishing or malware distribution sites.

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/free-robux-codes-on-iphone-game-hack
    • http://perpus.poltekeskupang.ac.id//repository/www-coin-master-hack-xyz_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-generate-free-coin-master-spin_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-use-cheat-engine-with-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-groups-on-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/robux-generators-that-actually-work_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/best-hacked-client_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/is-minecraft-realms-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-and-spin_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/rolbox-robux-inspect-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/roblox-online-free-no-download_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-2021-free-robux-pastebin_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-gameplay_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/robux-hack-tools_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/robux-gift-card-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb8.bin
2da7c529e8193204bdec769702983e268d738da5faaea1883e9787e3c4e56596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB8 22548 bytes
font_01_sfnt_off00006294.bin
312c940568e91bf4233b74a04e1f1778f5f3c3f05220ac3657348913a73ffee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6294 19232 bytes

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