PDF malware analysis — malicious · 961a763b88e00afc

MALICIOUS

PDF

43.6 KB Created: 2020-07-30 17:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 67fe6b723e9801474ceb65860465cb23 SHA-1: b93ea8a9884982ca88b0b6b205029fe77f250cef SHA-256: 961a763b88e00afc0333426de44183ab4c146d40acc4ce9342029f631e24b076

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to PDF manipulation and the authoring tool 'wkhtmltopdf'. The primary attack pattern involves luring users to malicious infrastructure via these 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.ru/pify?keyword=x%25C3%25B3a+1+trang+trong+file+pdf+online
- http://files.puddlesandrainbows.org/uploads/1/3/2/6/132682685/gasijarelejonabuga.pdf
- http://files.delphilibrarydigital.com/uploads/1/3/1/4/131455328/wasozasolog.pdf
- http://files.championsignsllc.net/uploads/1/3/0/7/130775510/5315619.pdf
- http://files.watchwordediting.com/uploads/1/3/2/6/132681769/9563663fdf7264a.pdf
- http://files.xangrey.com/uploads/1/3/2/6/132695428/80e19d1b4fd20.pdf
- http://files.championsigns
- https://cdn.shopify.com/s/files/1/0431/8245/7000/files/75228151095.pdf
- https://cdn.shopify.com/s/files/1/0435/2140/9184/files/78785008076.pdf
- https://cdn.shopify.com/s/files/1/0433/4790/2629/files/pomekekulab.pdf
- https://cdn.shopify.com/s/files/1/0433/3728/5797/files/xesabesazajibidurawelilaf.pdf
- https://cdn.shopify.com/s/files/1/0428/0382/2755/files/17315089832.pdf
- https://cdn.shopify.com/s/files/1/0435/0581/1608/files/wosefefawolefupemilupi.pdf
- https://cdn.shopify.com/s/files/1/0430/8526/7097/files/3689350753.pdf
- https://cdn.shopify.com/s/files/1/0428/7679/7081/files/neregiwifujogenibivifavup.pdf
- https://cdn.shopify.com/s/files/1/0431/4333/2000/files/dexadabazopugone.pdf
- https://cdn.shopify.com/s/files/1/0431/7482/2043/files/rozududojuxan.pdf
- https://cdn.shopify.com/s/files/1/0434/4889/3606/files/96269408679.pdf
- https://cdn.shopify.com/s/files/1/0433/9744/7836/files/8829748989.pdf
- https://cdn.shopify.com/s/files/1/0431/5404/7137/files/5941235649.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_off00006c6f.bin` `4aff5f40bdd0a33c24b17d95cda30f9c90a89f8733064bb0a14779e7fdc72ec9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C6F	4984 bytes
`font_01_sfnt_off00007d2b.bin` `8c1fa66953c4d1d79cbe13f26b083662675281aa45377c54803454d9630b5e19`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D2B	9900 bytes

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