Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ad7755e415ec34…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 16:54:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fb4ee818882cb8bd9e6bbfc7b9e5aeaf SHA-1: dc256af2845ee39ea16bf0b150740770ccd118cc SHA-256: 64ad7755e415ec34dec258e4deeca4223630baf4b766d7d6fc20d9287dc97730
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to external resources related to game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high, suggesting malicious intent. The document body and extracted URLs strongly suggest a lure for users seeking in-game advantages or free items, likely leading to malware downloads or phishing.

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-script-free-sword-game-hack
    • https://hekl-software.de/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • https://hekl-software.de/images/turtle-roblox-hack_GM431946152.pdf
    • https://hekl-software.de/images/free-tiktok-likes-and-followers_GM835599320.pdf
    • https://hekl-software.de/images/how-to-get-everything-for-free-on-roblox_GM431946152.pdf
    • https://hekl-software.de/images/free-tiktok-likes-2021_GM835599320.pdf
    • https://hekl-software.de/images/free-minecraft-java-edition_GM479516143.pdf
    • https://hekl-software.de/images/free-that-spells-free-roblox-id_GM431946152.pdf
    • https://hekl-software.de/images/free-robux-human-verification_GM431946152.pdf
    • https://hekl-software.de/images/coin-master-free-spins-link-download_GM406889139.pdf
    • https://hekl-software.de/images/free-robux-for-kids-no-human-verivacation_GM431946152.pdf
    • https://hekl-software.de/images/roblox-store-free_GM431946152.pdf
    • https://hekl-software.de/images/play-free-games-online-without-downloading-roblox_GM431946152.pdf
    • https://hekl-software.de/images/free-roblox-account-with-robux-2021_GM431946152.pdf
    • https://hekl-software.de/images/codes-to-get-free-robux_GM431946152.pdf
    • https://hekl-software.de/images/ways-to-get-free-robux-2021_GM431946152.pdf
    • https://hekl-software.de/images/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • https://hekl-software.de/images/coin-master-hack-2021-no-survey_GM406889139.pdf
    • https://hekl-software.de/images/free-robux-easy-and-fast_GM431946152.pdf
    • https://hekl-software.de/images/free-to-play-minecraft-servers_GM479516143.pdf
    • https://hekl-software.de/images/robux-com-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_off000030be.bin
9af6bb2c3446de97997f9d3ea04053c10fb433dddaad5ede66e7be2bc236c790
pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE 22492 bytes
font_01_sfnt_off000062c0.bin
ec7d302af163371a785989618068cad25f7918e777568a4c6e49aaf2f571bd28
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 19388 bytes