Malicious PDF — malware analysis report

Static analysis result for SHA-256 65396e5607389940…

MALICIOUS

PDF

40.9 KB Created: 2021-04-24 23:38:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: de58ac21b8b4ad4437a27e929b39dd4f SHA-1: 19b4869497a62d1c4017e4eb7f1c3e9dca790e9a SHA-256: 65396e560738994041683b660210c76c8a1966137a1a6bd582e620f3edd481ac
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL promising free Robux. The ML classifier also flagged this PDF as malicious. The presence of a visual download button lure further supports the malicious intent of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/how-to-get-free-robux-for-roblox.com-game-hack In PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/fre-de-fasility-en-roblox-manucrafting.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-vine-crown-for-roblox.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-robux-no-offers-no-verification-no-surveys.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-snow-shoveling-simulator-free-santa-bag.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-hack-roblox-on-android-tablet.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-work-at-a-pizza-place-cheat-engine.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-free-hats-obby.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-hack-robux-cheat-engine-61.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-roblox-studio-blocks-addon.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/hack-mad-city-roblox-cpat.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43EA 25012 bytes
SHA-256: 03618659c66356edf675477d0b53236f3917e9bac5c7fafdc179777f41f54901
font_01_sfnt_off00007cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCE 18684 bytes
SHA-256: 48668eb0a2d9254b87ccb03d699f4ab69d34e1732968e2df9b2e981bb88b73d2

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