Malicious PDF — malware analysis report

Static analysis result for SHA-256 405f130a0243ee53…

MALICIOUS

PDF

33.9 KB Created: 2021-06-28 08:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 38c4f91f56cd77d118da3fdf262c75a5 SHA-1: ce20f8bfaaa69132caadb21cf1d80b571a214b37 SHA-256: 405f130a0243ee53bafd46545cc35fcd986f492eb70f45a2e070481a6a4afee4
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that are part of a link farm, likely intended to direct users to malicious content or downloads. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure further supports a malicious intent. The document's content and URLs suggest a scam aimed at tricking users into downloading game cheats or hacks.

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/roblox-doom-cheats-game-hack PDF link annotation
    • http://jkcoaching.nl/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-ro-goul-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-roblox-promo-codes-for-wing-2021_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-how-to-hack-2021_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/allahuakbar-roblox-hack_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-roblox-tickets-hack_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-phantom-forces-beta-hack_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-hack-roblox-account-to-delete-them_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-faces-on-roblox-names_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-strucid-battle-royale-aimbot-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/robux-free-xyz_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD3 22180 bytes
SHA-256: 723d8f66002c8978ba720cc147b9cc65151aaffe941a03f05bc4aa9afcea0cc8
font_01_sfnt_off00005ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF3 19184 bytes
SHA-256: 7b3dfc1aae0ad3e130b6b5d87348131c42c0fdd914172c77bdd2c31722d99b73

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