Malicious PDF — malware analysis report

Static analysis result for SHA-256 294dbaed258db546…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 13:30:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d9fac1bae972314b3c37cd1ba4b990a3 SHA-1: 1d4317a4b321d08fdf0a37bd51aef7aca27234fc SHA-256: 294dbaed258db546cc8899e4b7fe63a065a914873694d7be7cf419161cd57599
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites that promise free in-game items, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of algorithmically generated URLs further supports this. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/431946152/how-do-you-get-free-robux-2021-game-hack
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/play-coin-master-online-free_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robux-free-c_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/is-minecraft-java-free_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spins-hack-link_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-twitter_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-cards-for-free_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-skins-download-free_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/mistplay-robux_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/hacks-para-roblox_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-today_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e57.bin
5bfbfd6762ce73f6d35e709bf9916064ca4eee9e6f99697019dbd3fe6000d8f3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E57 26404 bytes
font_01_sfnt_off00008b29.bin
7afc4835c6f8d200a546e15f78f642ba5dd88c8fac7df04bc3003dd1e9f7232a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B29 19016 bytes

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