Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2be6c419b11bccc…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 19:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ad58eb1e0b2828971d2e7db28f0be819 SHA-1: d1efed5f76fb7b96741fde1adc9c1595d584c4f4 SHA-256: a2be6c419b11bccc21f142db45994e3b6d54afd8e58f24715b626f19382a9e59
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are SEO-optimized slugs pointing to game-related hacks and free currency. The primary external URL, 'https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-facebook-game-hack', is likely a lure to a malicious site. The presence of numerous similar links suggests a link farm designed to attract users seeking cheats or exploits, which is a common tactic for distributing malware or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-link-today-facebook-game-hack
    • https://www.dc-itsolutions.com/userfiles/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-xyz_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-do-we-get-free-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-multiplayer-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/hack-coin-master-free-spins_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-bonus_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/claim-gg-free-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-no-gift-card_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-spin-hack-without-verification_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/mcpe-master-hack-coin-apk_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/promo-codes-for-free-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-script-executor-roblox_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-launcher-download-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-minecraft-coins_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-redeem-code-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d6d.bin
f270f258498186ae2f1aca260464d7d3ef70ede6fed5ae55906a2a2a3c7bba04
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D6D 25076 bytes
font_01_sfnt_off000086de.bin
976bad0f84eadf36fe6397f68da5c043a767fda9c526d6325df07f5c92c7ef85
pdf-font-stream PDF embedded font (sfnt) at offset 0x86DE 18568 bytes