Malicious PDF — malware analysis report

Static analysis result for SHA-256 0138d189996ba697…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 09:59:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 21e81dba8b90645dd1dd9415cc732da4 SHA-1: 9e93cb19ce59573eff595e57b38f21dc164fdc0a SHA-256: 0138d189996ba69759728e878461f25ab6be2f8a26255ef01093e99ee2b924b2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that point to external resources, many of which are related to game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs suggest a lure to download or access potentially malicious content.

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/como-conseguir-el-egg-hunt-de-hacker-roblox-el-egglicht-game-hack
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-links_GM406889139.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-computer_GM406889139.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-2912-2021_GM406889139.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/cheats-fr-roblox-jailbreak-beta_GM431946152.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-things-on-roblox-2021_GM431946152.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/link-for-free-coins-in-coin-master_GM406889139.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/getrobux-info_GM431946152.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-not-fake-ral-2021_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/roblox-snowman-package-free_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-roblox-accounts-that-work_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-with-cookies_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-credit-hack-2021_GM431946152.pdf
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdf
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/haktuts-coin-master_GM406889139.pdf
    • https://elearning.mtsn9jombang.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_off00003070.bin
6442404ab07635813a651b980a8f0d454e1a16afc69861153d0b11ac05ebb03f
pdf-font-stream PDF embedded font (sfnt) at offset 0x3070 22220 bytes
font_01_sfnt_off000061ac.bin
7c7594c238dcc1bc608a263994cc7a0b02695a4d00eaa0b72e9e800185eb7aeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 19616 bytes