Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0154f727971a3f…

MALICIOUS

PDF

51.9 KB Created: 2020-07-27 16:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b19131a7cbdeeaf810560afe27ef87c6 SHA-1: 937917fc24d158c6ac565149139bec92e9c3fc01 SHA-256: cc0154f727971a3fde31968d1483fc9fb0d7199096243448a8493816b77d0eed
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains text related to 'benefits of information communication technology in business', suggesting a lure. The ML classifier also strongly indicated maliciousness.

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=benefits+of+information+communication+technology+in+business
    • http://files.kairospartners.io/uploads/1/3/2/6/132681773/036ce3bced28b.pdf
    • http://files.chacotravel.com/uploads/1/3/0/8/130814902/pojidizi.pdf
    • http://files.danechristopher.com/uploads/1/3/1/8/131856374/6eda2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/gixexusubalogixigutozuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/6549006009.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/43636206394.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/14948531264.pdf
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/5936849959.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/34092063832.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/kudajafu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1242/9723/files/nopafum.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/68380012543.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/36193969492.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_off00008c8e.bin
17c469dac047c1e85f8109d5d689725c0ac31a12fc4a10c021e7d3cc9e03fb00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8E 5468 bytes
font_01_sfnt_off00009f05.bin
aade7d372375a605bc1c6c23bc348dc3c4320d70df57be2510c0c8806d1da61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F05 10144 bytes

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