Malicious PDF — malware analysis report

Static analysis result for SHA-256 de50364c37cd3e7c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 11:19:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1697b1bafb34a4204f740ba3e0a1cf59 SHA-1: 8eb1f733dc073c75593d77b9efa565d94275cda4 SHA-256: de50364c37cd3e7c905c9862d0a3a4405b31e9d7542160644cd25b1ce846645b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are structured as SEO-optimized links pointing to pages offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a distribution mechanism for potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to download further malicious payloads.

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.tw/app/406889139/coin-master-hack-tool-2021-game-hack
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/hacks-for-coin-master-game_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-counter-blox-credit-hack_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-hacks-xbox-one_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-pet-trainer-roblox_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-codes-no-human-verification_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-wild-savannah-hacks_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-and-get-free-robux-on-ipad_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-promo-codes-april-2021_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-attack-hack_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-twitter_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-account-and-password-2021-with-robux_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/can-you-actually-get-free-robux_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-december-2021_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-net-free_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-redeem-card-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ff4.bin
693c235cd455b314d16e12a3cc190c173eb6048adae9c00a4c3aa3ce69348ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22700 bytes
font_01_sfnt_off000062be.bin
3dc977bc1210ceeedde7f87719dab6f525ca5e29bcd32cbe92ee8e1a0ab21cbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BE 18480 bytes

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