Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c27ec56bd8bf5f…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 22:55:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9f2f97a6faa2250d70cfacb7693a15d5 SHA-1: bcade76bf06c4e8b7947f06100a715df704a325a SHA-256: 89c27ec56bd8bf5fc4def132c0159dce53da23b614be184dabbfafd7ededf9b9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are SEO-optimized PDFs hosted on a university repository, suggesting a link farm designed to attract users searching for game cheats or hacks. The primary URL http://netcdn.co/app/431946152/neon-hacks-roblox-account-generator-game-hack likely hosts the malicious payload. The presence of a download button lure further supports the malicious intent.

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.co/app/431946152/neon-hacks-roblox-account-generator-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/make-your-own-character-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-accounts-2021-july_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pubg-uc-list_GM1330123889.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-number-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-on-roblox-rap-battles_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-girl-shirt-template-free-shipping_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-peoples-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F89 22800 bytes
SHA-256: 35f8b452dfa2a5eaf429b6f58280f87463a919c0f96e88a367484978241bbae1
font_01_sfnt_off000062c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 18900 bytes
SHA-256: 84a7e976f708652836176b7129a01b995cb8687729f0add30c06920d8a13a01b

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