Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a4c2a9bfdefea9…

MALICIOUS

PDF

52.5 KB Created: 2020-07-28 10:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863ee49f8a3af66aa4e8e1a05f1d8574 SHA-1: 80a6388ba704dcb31e81d1d6d3783486cea15048 SHA-256: e8a4c2a9bfdefea9b469a0c7b60943dbd92c6783e7965a851e45bafb4b4572ed
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=capitaland+limited+annual+report'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0434/0878/5562/files/88890662392.pdf' being a prominent example. The document body, though heavily obfuscated, contains text related to 'Capitaland limited annual report', suggesting a lure to disguise the malicious intent.

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=capitaland+limited+annual+report
    • http://files.highpointacademy.com/uploads/1/3/1/6/131637419/gapob.pdf
    • http://files.geollect.com/uploads/1/3/1/4/131438847/9ce542c.pdf
    • http://files.gammaetaomegaaka.org/uploads/1/3/1/6/131636990/5608641.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/88890662392.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/fumiremoxoriwuded.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/bezopurunom.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/tapenopolix.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/51296011290.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/3934628844.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3816/files/wuwekivaz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9342/4283/files/munonoximifura.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/1225254269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/zekux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/purutediv.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/55054968864.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000a9b4.bin
2c741fca65f808f3dbf619e954e099000bb249cfc19d394cc93457b880276ff6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA9B4 17604 bytes
font_00_sfnt_off00007237.bin
554d9c1fa27b8cc6338afe8626dfc10051e0d2e2aeb0ba4767cb0d86546ede8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7237 4832 bytes
font_01_sfnt_off00008282.bin
ac6e96e5828e1190ae824b02537f3ddfdfbb2df38964f9d236a5712fccc32149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8282 11872 bytes

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