Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a93585aaf822c6…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 14:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0b5028bea371bf3698de0ca5a0301432 SHA-1: 09aacf9e062d1c39ec3a2e20cabf4259bc18917b SHA-256: 95a93585aaf822c6b4a740bf2f1fa9d2ffd04895705912616d809acaa8fddc49
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a "link farm", all pointing to websites offering "free spins" and "hacks" for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" lure further supports a malicious intent. The primary goal appears to be directing users to potentially malicious or scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/406889139/100-free-spins-for-coin-master-2021-game-hack
    • http://pustaka.bbppketindan.info/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/free-game-pack-with-google-play-coin-master_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/is-minecraft-education-edition-free_GM479516143.pdf
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-apk-33-download_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/robux-hacks-2021_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/free-spins-and-coins-coin-master-links_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-links-app_GM406889139.pdf
    • http://pustaka.bbppketindan.info//repository/free-minecraft-skin-creator_GM479516143.pdf
    • http://pustaka.bbppketindan.info//repository/free-robux-link_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/can-you-earn-robux_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/free-robux-no-anti-bot-verification_GM431946152.pdf
    • http://pustaka.bbppketindan.info/repository/tiktok-free-view-iphone-5c_GM835599320.pdf
    • http://pustaka.bbppketindan.info//repository/coin-master-cheats-and-hacks_GM406889139.pdf
    • http://pustaka.bbppketindan.info/repository/pubg-uc-seagm_GM1330123889.pdf
    • http://pustaka.bbppketindan.info//repository/free-minecraft-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005431.bin
56eb8d662bd199b9be8deca4bb36fcced2a807ae2123bbb46cfd8f038a9fa8cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5431 25688 bytes
font_01_sfnt_off00008ea9.bin
7a7785de19adfa5a65cd79b10bfe31691e1cdc7f9f712964e30bbfe58da4eef2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA9 18288 bytes