Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c72d766305e4399…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 04:53:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d024431860b6678af91ccf14dacbd7f2 SHA-1: 25a278eb2486a44c83a5af88d7f29671393c490e SHA-256: 5c72d766305e4399a12a45dcb13dbae9bbee4b154411b9eb7e7d7d68ca92d490
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are designed to appear as download pages for game cheats or in-game currency. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a phishing or malware distribution attempt. The document body and extracted URLs point towards a lure for free in-game items, a common tactic for distributing malware or conducting scams.

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/free-roblox-account-robux-game-hack
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/robux-com-free-robux_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/cheat-codes-for-roblox-royale-high-android_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-spin-and-win-coin-master_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/pokemon-go-free-999_GM1094591345.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-windows-7-inspect_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-gift-card-generator_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-website-robux_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-make-a-cool-roblox-avatar-for-free_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-mod-version-free-download-34-4_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-not-clickbait-2021_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-without-human-verification_GM406889139.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/lazybux-com-free-robux_GM431946152.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdf
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-without-verify_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325b.bin
9d90668e9287c6891bbd54e368ceeb44b7a28fc9926834f2871d9029383beec5
pdf-font-stream PDF embedded font (sfnt) at offset 0x325B 21900 bytes
font_01_sfnt_off00006290.bin
30d8b7ddd15b9a4cb1e66359facbc9fe4e9bd5e1662882e34156048aea32a09a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6290 18896 bytes