Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b46e0589685681…

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 23:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 705824f00bd61845c90d86b5f936b635 SHA-1: 584287d4d8cf425597c2e3a38dbc45712be6891f SHA-256: 60b46e0589685681fc7bda481dfd0c3c414c8b7ddacd7309c735a61dbc5b179d
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are related to game cheats and currency, indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious. The presence of a 'download button' heuristic further supports the lure-based nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1330123889/pubg-uc-redeem-code-today-game-hack
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/watch-videos-for-robux_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/apps-to-get-free-robux_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/roblox-premium-free_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-hack-download-android_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/free-minecraft-account-generator_GM479516143.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-sound-daily-free-spins-link-today_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/how-to-get-free-robux-website_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-email-free-spins_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/free-spin-link-coin-master_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-links-for-today_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • https://www.gulfautotools.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045f2.bin
5613c92b8a146b2ca8f49a10ca60664be803078072d7a515a107a2dc1983fa0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45F2 24804 bytes
font_01_sfnt_off00007e35.bin
97fafda32911fa8aa7a926f63b5c5a5f351097cf6924b64109c3b7b143c4ce2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 18880 bytes

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