Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddee7609c6acd6d0…

MALICIOUS

PDF

35.8 KB Created: 2021-06-21 03:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8061b90fc4decf73385cb2b77faa798c SHA-1: 740a698683cca43e4430375f8d0ea658eefb831e SHA-256: ddee7609c6acd6d0cac236a3fd69d833934f119b7e7f21d431620687365c7321
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages designed to trick users into downloading applications. The document body and heuristics indicate a lure for free in-game currency, a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests a distribution mechanism for malware.

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-generator-no-human-verification-no-survey-2021-game-hack
    • http://hk-kan.org/images/free-robux-kingdom_GM431946152.pdf
    • http://hk-kan.org/images/can-i-get-robux-for-free_GM431946152.pdf
    • http://hk-kan.org/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://hk-kan.org/images/free-minecraft-survival-server_GM479516143.pdf
    • http://hk-kan.org/images/coin-master-free-spins-hack_GM406889139.pdf
    • http://hk-kan.org/images/coin-master-cheat-codes-free_GM406889139.pdf
    • http://hk-kan.org/images/coin-master-free-stars_GM406889139.pdf
    • http://hk-kan.org/images/roblox-bandit-simolator-hack-infinity-coins_GM431946152.pdf
    • http://hk-kan.org/images/free-role-in-coin-master_GM406889139.pdf
    • http://hk-kan.org/images/how-to-get-free-robux-june-2021_GM431946152.pdf
    • http://hk-kan.org/images/get-minecraft-for-free_GM479516143.pdf
    • http://hk-kan.org/images/free-robux-with-no-verification_GM431946152.pdf
    • http://hk-kan.org/images/free-robux-hacker-us_GM431946152.pdf
    • http://hk-kan.org/images/you-promised-my-son-free-robux_GM431946152.pdf
    • http://hk-kan.org/images/coin-master-hack-mod-apk-35-8_GM406889139.pdf
    • http://hk-kan.org/images/free-minecraft-games-for-kids_GM479516143.pdf
    • http://hk-kan.org/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://hk-kan.org/images/is-minecraft-bedrock-edition-free_GM479516143.pdf
    • http://hk-kan.org/images/free-minecraft-pe-server_GM479516143.pdf
    • http://hk-kan.org/images/free-minecraft-alt-accounts_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003191.bin
406d801875ba194d978a31df90c0a7660efac1f6eb3b812327872f84c17b2555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3191 22600 bytes
font_01_sfnt_off00006401.bin
7dedea29552996798b219831b869d3e8f8ae7d84fb0a99c65df6448efb5d0be5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6401 20028 bytes

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