PDF malware analysis — malicious · 211bdb27f4b8a1c5

MALICIOUS

PDF

54.7 KB Created: 2020-07-25 18:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 54bc3410267394691b0225c0911752ad SHA-1: e676d3a0a2132ebfebeb3c93a99a4faab583dec2 SHA-256: 211bdb27f4b8a1c5fa53f53f9769ebd681fc1d980238c35e4451afa8ad36f0a3

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=financial+analysis+report+example+introduction'. 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 'Financial analysis report example introduction', suggesting a lure to entice users to click the malicious link. No scripts were extracted, and the primary malicious activity appears to be redirection.

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=financial+analysis+report+example+introduction
- http://files.clarityautoglass.com/uploads/1/3/2/6/132681479/73467ce9.pdf
- http://files.worddestinations.com/uploads/1/3/0/7/130776111/kukoziduzabigomekigo.pdf
- http://files.kimrichards.co.uk/uploads/1/3/2/6/132695829/tegesoni.pdf
- http://files.kimrichards.co.uk/uploads/
- https://cdn.shopify.com/s/files/1/0432/5172/8546/files/1740978528.pdf
- https://cdn.shopify.com/s/files/1/0437/8873/0525/files/63810231830.pdf
- https://cdn.shopify.com/s/files/1/0431/6961/1935/files/zajixejadebazebezed.pdf
- https://cdn.shopify.com/s/files/1/0432/3550/8381/files/jeximumudaweletigotomef.pdf
- https://cdn.shopify.com/s/files/1/0432/4642/0136/files/zenikesudoweja.pdf
- https://cdn.shopify.com/s/files/1/0429/6579/4965/files/26520986556.pdf
- https://cdn.shopify.com/s/files/1/0427/8131/1132/files/belisudavisuvamegonijid.pdf
- https://cdn.shopify.com/s/files/1/0430/0469/0581/files/17980801945.pdf
- https://cdn.shopify.com/s/files/1/0430/5348/2138/files/bajapex.pdf
- https://cdn.shopify.com/s/files/1/0429/5429/3402/files/51323977028.pdf
- https://cdn.shopify.com/s/files/1/0429/5429/3402/files/31623315196.pdf
- https://cdn.shopify.com/s/files/1/0430/1501/2511/files/favumakiweporotosajiniju.pdf
- https://cdn.shopify.com/s/files/1/0437/7988/3170/files/91697001819.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_off0000973d.bin` `97d7298e243b7b9e3825da0d319a096eed4bfaa03d3e296cd5433b309100f934`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x973D	5224 bytes
`font_01_sfnt_off0000a8ec.bin` `441696d0355beab405eb5271cac04af3cad2277128d7d5fe8e80f69c59e48205`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA8EC	10736 bytes

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