PDF malware analysis — malicious · 28b2fa4d8255ef33

MALICIOUS

PDF

40.8 KB Created: 2020-08-29 08:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 88a76026373eca09311334823aa4d424 SHA-1: bc2377bc3446970bb152facff99630467eabbbe1 SHA-256: 28b2fa4d8255ef3329afdcf7db4d66e36e155c96e429650ab2719ece203c9ef1

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'the art of tinkering pdf'. The heuristic firings indicate the PDF is designed as a redirector and a link farm, aiming to direct users to malicious infrastructure. No scripts were extracted, but the primary attack vector appears to be social engineering through embedded 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/wix?keyword=the+art+of+tinkering+pdf
- https://static.usrfiles.com/ugd/b8c837_d7c9aa69c6b6467197863a636d7d41a7.pdf
- https://static.usrfiles.com/ugd/b8c837_4ee56da3962946a6b66980bc93c3630a.pdf
- https://static.usrfiles.com/ugd/b8c837_847af44f1b3546cfb31964275fee38e1.pdf
- https://static.usrfiles.com/ugd/b8c837_87dae8a125224dc88f2886f9e307c26c.pdf
- https://static.usrfiles.com/ugd/b8c837_bb82a22829c948088fe3de00d5cd58b0.pdf
- https://static.usrfiles.com/ugd/b8c837_4bb2d338c05a46798132c10f46895a33.pdf
- https://static.usrfiles.com/ugd/b8c837_22753cedaa424edbbe5fa513a506f6e2.pdf
- https://static.usrfiles.com/ugd/b8c837_25b58bb01a5243d7ab4e2c5c332ed164.pdf
- https://static.usrfiles.com/ugd/b8c837_ed2bcaf1ba7d400998efd749d792b133.pdf
- https://static.usrfiles.com/ugd/b8c837_550e1608d7534594aaa9e56f712f9d10.pdf
- https://static.usrfiles.com/ugd/b8c837_558be57c9b444ec29405b26a0a826d00.pdf
- https://static.usrfiles.com/ugd/b8c837_1a04c1735e534a769bc333a6f7d715d1.pdf
- https://static.usrfiles.com/ugd/b8c837_3de69c04da594bbda791b531164c03b0.pdf
- https://static.usrfiles.com/ugd/b8c837_4a38b91aee22431499a9fc49b698dd39.pdf
- https://cdn.shopify.com/s/files/1/0437/4963/8295/files/19635347324.pdf
- https://cdn.shopify.com/s/files/1/0431/6397/5835/files/60452476680.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_off000056df.bin` `74dfa3732756dbb7ea18f58656b170679d9276b64ff836252bcace0399ee93cf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56DF	4896 bytes
`font_01_sfnt_off0000677a.bin` `c66bffc0acdcaebf7040efa930e4d5a2c80409dd12f2880fa01b626ef0f16e96`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x677A	9620 bytes
`font_02_sfnt_off00008855.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8855	4324 bytes

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