Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5ac3fed39ec44d…

MALICIOUS

PDF

44.3 KB Created: 2020-08-20 11:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adb2e523cb73981cca3a31d2bfeb9c1e SHA-1: db08c0225b853dbab3c5eef75ab2bd0018b283d8 SHA-256: 2d5ac3fed39ec44d116f253927964430078e103dca92cf69d3a1ccf12a47026e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.com, which is disguised as a lipid profile test report. This suggests a phishing or social engineering attack aimed at redirecting users to malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=lipid+profile+test+sample+report
    • http://files.strokefestival.org/uploads/1/3/0/9/130969717/085c482c.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/fexototabikibazenurifabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/nipopinofofafel.pdf
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/jexejizumomom.pdf
    • https://cdn.shopify.com/s/files/1/0431/6525/3792/files/73744175527.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/47668350098.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/51728507523.pdf
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/nuporatewi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/29317245260.pdf
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/gogusiwur.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
font_00_sfnt_off00006311.bin
b4de3acaf7235b4806bb338196c52160e619ecdc44b4305b63a8043e2ec540a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 4808 bytes
font_01_sfnt_off00007369.bin
f0e23bbfd90d9d01f5813c28b6e71ab018cd753bbfbc3bfc118a283d9a9a1c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 10320 bytes
font_02_sfnt_off000096a0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96A0 4324 bytes

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