Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef60750af264891…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 03:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a384275b1122d5718839bf15debdbb24 SHA-1: 738b9d011c409be5e0ee81df46a99297e4cc13f3 SHA-256: bef60750af264891d417a2d10b8192f74c0e103454085005b213527893f2c4bf
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate documents, but the primary link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=hygiene+and+food+safety+pdf, which is a critical finding. This suggests the PDF is a lure to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://ttraff.cc/pify?keyword=hygiene+and+food+safety+pdf
    • http://files.rockphenoms.com/uploads/1/3/2/8/132815785/6dc05f.pdf
    • http://files.emberlight.co.nz/uploads/1/3/1/0/131071056/d49f131.pdf
    • http://files.fisherexperience.com/uploads/1/3/1/0/131070452/tepavokinovagulixoku.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2133/files/netujumebalazisedurogipa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/39808777483.pdf
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/xunomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/mukipumelug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/suwonutafubeliropituwoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/64442255830.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/81329582708.pdf
    • https://cdn.shopify.com/s/files/1/0440/1568/1701/files/puduzenuxawozenabo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/nasazofajepi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/zexusalimuwited.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006355.bin
c6dee39e7b887ca27321a6dca9381161d31a8ba8b2c001200628114b396ba46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6355 5144 bytes
font_01_sfnt_off00007501.bin
200dc214bd83233e96adf5411b5c6a25e9fb0abc6fe278ef8351d77f2bfdaf9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 9704 bytes

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