Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3898d7563c6a266…

MALICIOUS

PDF

45.2 KB Created: 2021-05-17 03:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5d17c529967b719bf0ca3f920381701c SHA-1: b26c4efde94038c90ed95dcd3c108cf5b3f7eacb SHA-256: e3898d7563c6a266189615cef575d71a47932a2ae82c56a6200b4f7a32bd0e18
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to external resources that appear to be part of a link farm. The presence of a call-to-action button suggests an attempt to trick the user into clicking these links, likely leading to a phishing or malware download site. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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.xyz/app/479516143/free-minecraft-capes-no-mods-game-hack
    • http://www.msts.ac.th/UserFiles/File/free-spins-for-coin-master_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/free-roebucks_GM431946152.pdf
    • http://www.msts.ac.th/UserFiles/File/roblox-hack-generator_GM431946152.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-free-coins-2021_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/www-roblox-com-free-robux_GM431946152.pdf
    • http://www.msts.ac.th/UserFiles/File/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/free-robux-with-no-survey_GM431946152.pdf
    • http://www.msts.ac.th/UserFiles/File/free-coins-on-coin-master-generator_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-mod_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-gold-cards-free-2021_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-70-spin-link-today_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-viking-quest-hack_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/best-roblox-hacks_GM431946152.pdf
    • http://www.msts.ac.th/UserFiles/File/wurst-112_GM479516143.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-hack-app-ios-download_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdf
    • http://www.msts.ac.th/UserFiles/File/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • https://youtu
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b46.bin
a039cfeeac83035f9ba26d14519f833ecc60be3f9eb6e9642992ce460f6d9555		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B46 25612 bytes
font_01_sfnt_off0000854c.bin
61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 2824 bytes
font_02_sfnt_off00008ef3.bin
d2580fb4aafe993e5dab330080fdbce20cb4b143aeb227db28560abf8afc6474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF3 18060 bytes

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