Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2223ddd98b478e9…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 01:57:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 10220b5c1645f7ca329d9d42d1fd34ec SHA-1: 705155ee07a94283016f950c26cd5145a41fdb4a SHA-256: e2223ddd98b478e9b76a3929ac782fed8390ebebe8a8231a2296f54a5fa677b9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm heuristic, suggesting it is designed to direct users to external content. The document body and extracted URLs indicate a lure related to obtaining free items or hacks for popular online games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of external links points towards a potential phishing or malware distribution attempt.

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/how-to-make-pants-on-roblox-for-free-game-hack
    • https://www.gvandenakker.nl/images/free-spins-coin-master-2021-hack_GM406889139.pdf
    • https://www.gvandenakker.nl/images/coin-master--hack_GM406889139.pdf
    • https://www.gvandenakker.nl/images/telecharger-hack-pour-roblox-mad-city_GM431946152.pdf
    • https://www.gvandenakker.nl/images/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://www.gvandenakker.nl/images/free-roblox-card-no-human-verification_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-robux-card-redeems_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://www.gvandenakker.nl/images/roblox-has-talent-piano-hack_GM431946152.pdf
    • https://www.gvandenakker.nl/images/minecraft-pe-free-apk_GM479516143.pdf
    • https://www.gvandenakker.nl/images/can-you-actually-get-free-robux_GM431946152.pdf
    • https://www.gvandenakker.nl/images/arsenal-cheats-roblox_GM431946152.pdf
    • https://www.gvandenakker.nl/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • https://www.gvandenakker.nl/images/how-to-get-followers-on-tiktok-for-free_GM835599320.pdf
    • https://www.gvandenakker.nl/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • https://www.gvandenakker.nl/images/mad-city-hack-roblox_GM431946152.pdf
    • https://www.gvandenakker.nl/images/when-is-hacking-day-for-roblox-for-2021_GM431946152.pdf
    • https://www.gvandenakker.nl/images/how-to-hack-srf-15-a-roblox_GM431946152.pdf
    • https://www.gvandenakker.nl/images/roblox-supreme-shirt-free_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-spins-coin-master-links-twitter_GM406889139.pdf
    • https://www.gvandenakker.nl/images/roblox-admin-hack-no-virus_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003081.bin
757c6be5661f3357213d2d00f45780ab1267953165586136578cbabdaa088c39
pdf-font-stream PDF embedded font (sfnt) at offset 0x3081 22152 bytes
font_01_sfnt_off000061ab.bin
d95c211d49caa537aaefc34ec77fe2c0a1179988c33d9974f727c31e8a7ef361
pdf-font-stream PDF embedded font (sfnt) at offset 0x61AB 19436 bytes