PDF malware analysis — malicious · 4e05f9331418d8a6

MALICIOUS

PDF

45.9 KB Created: 2020-07-25 01:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9156dc48578334020480141193fb4795 SHA-1: e764f72a367eff0a8d94536380dbfec6586a4816 SHA-256: 4e05f9331418d8a6985fba68a71cd91aa591f4dd9995bd053f5f2b9893ae16ee

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links are embedded, with the primary redirector being traff.cc. The document body, though heavily obfuscated, appears to be a worksheet, likely a lure to encourage interaction with the malicious links.

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=identifying+functions+worksheet
- http://files.gracebaptistmarshall.com/uploads/1/3/2/7/132710748/b1a5e2.pdf
- http://files.kmpc.org/uploads/1/3/0/9/130969026/643acc0bf7e62.pdf
- http://files.victoriapolishhall.com/uploads/1/3/1/4/131408502/nepisogepefotadagevi.pdf
- http://files.predictiv.co.uk/uploads/1/3/0/8/130874090/91cd1b9566ffb1.pdf
- http://files.artsindustryalliance.com/uploads/1/3/0/8/130874381/fadurububoxupurujob.pdf
- http://files.artsindustryalliance.com/uploads/1/3/0/8/130874381/fadurubu
- https://cdn.shopify.com/s/files/1/0431/4388/9058/files/dofenedezifonezorol.pdf
- https://cdn.shopify.com/s/files/1/0431/8996/0865/files/32027972250.pdf
- https://cdn.shopify.com/s/files/1/0430/3742/5813/files/metutigob.pdf
- https://cdn.shopify.com/s/files/1/0430/1121/1425/files/zalubizazewegapumuwela.pdf
- https://cdn.shopify.com/s/files/1/0432/8852/7013/files/83976063474.pdf
- https://cdn.shopify.com/s/files/1/0427/9389/4044/files/guvufomidilobuwisemuvugat.pdf
- https://cdn.shopify.com/s/files/1/0428/4334/0956/files/94217073486.pdf
- https://cdn.shopify.com/s/files/1/0434/4987/6630/files/guwexosisexumuza.pdf
- https://cdn.shopify.com/s/files/1/0429/1382/4927/files/39779422876.pdf
- https://cdn.shopify.com/s/files/1/0432/6942/3269/files/wegoxopo.pdf
- https://cdn.shopify.com/s/files/1/0432/8646/2628/files/90962896586.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000061ca.bin` `bfa06899812fa9cc66bf43e280fd72a7353e98f2224aa718f8cd8fcfe1011bfe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CA	5116 bytes
`font_01_sfnt_off00007346.bin` `f45970f5bf5d015ff706633aaca069e0026d2ddf888ecb5610509c957630a806`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7346	9824 bytes
`font_02_sfnt_off00009522.bin` `de5e424296fca6632de503ebef56d41c9898c13bba2aba3354ff7f3c3578a82d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9522	16116 bytes

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