PDF malware analysis — malicious · f3b1a4df19fb1c88

MALICIOUS

PDF

41.3 KB Created: 2020-08-15 11:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4a7101de703b12661b05a24a5a5e1108 SHA-1: 1bd59e05a6bbab09e5834e8e019d158a34fbb293 SHA-256: f3b1a4df19fb1c880589abb602f9a06555d8587fc379cdadf07e6d60229427ca

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector at https://ttraff.com/wb?keyword=target%20application%20pdf%202017. This indicates the document's primary purpose is to redirect users to malicious infrastructure.

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/wb?keyword=target%20application%20pdf%202017
- http://files.gunmess.com/uploads/1/3/1/6/131637635/0c324d59f22f280.pdf
- http://lolavum.centralfloridamedium.com/uploads/1/3/1/6/131637881/sisaw-mofasumuxiz-monorivun-jojawup.pdf
- http://files.christkingdomsaginaw.org/uploads/1/3/1/4/131438869/lazafolewovofe.pdf
- http://files.rohetrackera.com/uploads/1/3/1/4/131455337/9821575.pdf
- https://cdn.shopify.com/s/files/1/0431/3173/2132/files/gatijejibadok.pdf
- https://cdn.shopify.com/s/files/1/0438/8909/8907/files/73633775288.pdf
- https://cdn.shopify.com/s/files/1/0440/3901/2502/files/12592726934.pdf
- https://cdn.shopify.com/s/files/1/0430/3516/4835/files/waniwefud.pdf
- https://cdn.shopify.com/s/files/1/0429/3525/5203/files/82388151676.pdf
- https://cdn.shopify.com/s/files/1/0437/3633/4501/files/12528936954.pdf
- https://cdn.shopify.com/s/files/1/0436/4363/3822/files/fafakijosevigubakonix.pdf
- https://cdn.shopify.com/s/files/1/0434/0744/2072/files/waderiwe.pdf
- https://cdn.shopify.com/s/files/1/0432/9770/2046/files/lesilelijemigexokokib.pdf
- https://cdn.shopify.com/s/files/1/0430/0151/2095/files/lixuwi.pdf
- https://cdn.shopify.com/s/files/1/0437/2270/2999/files/84616707840.pdf
- https://cdn.shopify.com/s/files/1/0438/5452/8677/files/396337748.pdf
- https://cdn.shopify.com/s/files/1/0434/1812/4445/files/18686546426.pdf
- https://cdn.shopify.com/s/files/1/0435/8720/7327/files/repoxixi.pdf
- https://cdn.shopify.com/s/files/1/0430/6848/9881/files/kiran_bank_maths_book.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005f36.bin` `16068371540ab00b59c6b8803c294666a62fafed4f7d40527de114aff5d2912b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F36	5500 bytes
`font_01_sfnt_off00007208.bin` `a7bdb2f41d56ec2198c81a06a3f91b5c269e4e7574851e4b2678636df7b51a01`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7208	11192 bytes

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