Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb3c68f1b9ce8cf…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 20:16:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 22600919685166120be4fd449c9415df SHA-1: d1510c9710b595bafb7a6599e473947571e479ca SHA-256: 8eb3c68f1b9ce8cfc0379f65e86db493c91210e85cfd8f63b85b98cffbe95b6b
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms. The document body and extracted URLs suggest a lure for users seeking game cheats or hacks, which is a common tactic for distributing malware. The ML classifier also strongly indicated maliciousness.

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/dragon-riders-roblox-hack-game-hack
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-gift-cards-robux-codes-no-survey_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/hack-coin-master-dzooka_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-hack-roblox-adopt-me_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/easypoints-gg-roblox_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-do-people-make-roblox-hack-tools_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-200-spin-link_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/tiktok-free-view-editor_GM835599320.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-websites-that-work_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-cheats_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-free-wings-code_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-hack-on-roblox-and-get-robux_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-uncopylocked-roblox-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1b.bin
315ccd3794816bf351b524fadab3abeb44b049b44e48394234076987cb31b0f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 22496 bytes
font_01_sfnt_off00006157.bin
3c556cb462ebbc8ee9a7d80acd9428c486244a822f70f1a49b4ee31c2574b701		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6157 19116 bytes

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