Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1573e46ffebf06…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 21:08:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: df55697d3580dc2ac0c8d33ff72d65ae SHA-1: 11ae42ee3730be665166fdce4aa59c7a1ede81a3 SHA-256: 2a1573e46ffebf06658da2c8f15bd3baf054d5a5b062fabb094071d33ab31d28
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files promising free in-game items or downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests a phishing or malware distribution attempt. The primary URL, http://netcdn.co/app/431946152/roblox-card-number-free-game-hack, likely serves as the initial landing page for this campaign.

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-card-number-free-game-hack
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/can-u-get-free-robux_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/free-coin-link-for-coin-master_GM406889139.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/como-tener-robux-gratis-facil-y-rapido-sin-hack_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/free-roblox-shirts-templates_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-mod_GM406889139.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/coin-master-redeem-code-free_GM406889139.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/win1codez-free-robux_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/get-free-robux-without-human-verification_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/e-free-roblox_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey-or-download-2021_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/coin-master-daily_GM406889139.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/roblox-2021-anti-cheat_GM431946152.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/coin-master-free-mighty-lion-card_GM406889139.pdf
    • http://elearning.mtsn2buleleng.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032dd.bin
07cb9261ee253d16abc1d0aba20a5ee6edf66c097c304c49d77f7c180201a46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32DD 22244 bytes
font_01_sfnt_off0000647d.bin
39dab6527f32721e1aa6b71e50257f416e4839c8d17466943529ec1c2037a60b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647D 19224 bytes

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