Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7b459ee880e506…

MALICIOUS

PDF

50.1 KB Created: 2021-05-12 20:40:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 54dcfa7cc0bc327c45a5620a23bf4030 SHA-1: d081d78c9253884916e677db6369d6d995549b4c SHA-256: 1e7b459ee880e506349dadd674696ed7bd0175c524b1852f72ae30f56a0d26bc
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links pointing to other PDF files, many of which are related to popular games like Roblox and Coin Master. This suggests a link farm designed to lure users into downloading potentially malicious content. The presence of a visual download button further supports this malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/431946152/worst-roblox-avatars-game-hack
    • http://projectunionstreet.com/library/repository/free-robux-apk_GM431946152.pdf
    • http://projectunionstreet.com/library/repository/free-coin-master-gifts_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdf
    • http://projectunionstreet.com/library/repository/roblox-free-printables_GM431946152.pdf
    • http://projectunionstreet.com/library/repository/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-app-apk_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-free-400-spin-link_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • http://projectunionstreet.com/library/repository/free-spins-on-coin-master-hack_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-34-5-hack_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-hack-ios-reddit_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/roblox-got-talent-piano-hack_GM431946152.pdf
    • http://projectunionstreet.com/library/repository/get-free-coin-master-coins_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/orewards-com-free-robux_GM431946152.pdf
    • http://projectunionstreet.com/library/repository/coin-master-free-gifts_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-link-2021-april_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/free-coin-master-spins_GM406889139.pdf
    • http://projectunionstreet.com/library/repository/coin-master-hack-without-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d1d.bin
b742aa2bc327d2ceb81698053ee5fbb411eea45cdca811c2ce74510528cf5f0b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1D 27052 bytes
font_01_sfnt_off000089fc.bin
972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 2820 bytes
font_02_sfnt_off00009397.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9397 5696 bytes
font_03_sfnt_off0000a0a8.bin
6ace7b5324c956ccbfd05766e740bf26877bde50396ed9b1cb0e10f1ff81d407		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A8 18428 bytes

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