PDF malware analysis — malicious · fbbadffc2f444ba6

MALICIOUS

PDF

43.3 KB Created: 2020-08-04 12:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 99cb81a7980b799111783ab6433af1e6 SHA-1: 81c47cf58954a781481bc1e8b08dfbe8c4c8fd76 SHA-256: fbbadffc2f444ba603fa4a2137988ad0d0c1426970eb605b9dd36bc361da6e46

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references 'wkhtmltopdf', suggesting it's a generated document. The presence of numerous embedded links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=biblias+de+estudio+pdf
- http://files.kpcouncil.org/uploads/1/3/1/6/131606343/dopagomi-wuvagovudu-ramor.pdf
- http://files.turnberrypress.com/uploads/1/3/1/4/131438641/finosozemeridaj.pdf
- http://files.partybcause.com/uploads/1/3/0/9/130969944/315890.pdf
- http://files.finelinesfishing.com/uploads/1/3/2/6/132696351/kixojagaforu.pdf
- https://cdn.shopify.com/s/files/1/0428/8253/1481/files/83501281939.pdf
- https://cdn.shopify.com/s/files/1/0433/7192/1571/files/24713264705.pdf
- https://cdn.shopify.com/s/files/1/0428/3911/3895/files/nopuxusitemotudige.pdf
- https://cdn.shopify.com/s/files/1/0433/9888/9635/files/jivikazorawenawifujow.pdf
- https://cdn.shopify.com/s/files/1/0434/2022/1607/files/42293801529.pdf
- https://cdn.shopify.com/s/files/1/0432/3019/9966/files/jagenerefogaso.pdf
- https://cdn.shopify.com/s/files/1/0437/9131/9200/files/78199722740.pdf
- https://cdn.shopify.com/s/files/1/0429/8289/9871/files/jafulisafiwava.pdf
- https://cdn.shopify.com/s/files/1/0431/6459/8434/files/11149002657.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
- https://cdn.shopify.com/s/files/1/0430/0954/0257/files/kedonitulijikuze.pdf
- https://cdn.shopify.com/s/files/1/0427/6345/2583/files/wigufadurogedixafuga.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_off00004a3e.bin` `3904b9198c5774f871c7e0dafa5ffd96e5365cf06c58c97d512e31dbe5d681eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A3E	5128 bytes
`font_01_sfnt_off00005bbf.bin` `1042a4ee0022c851d641ecfd435c1c1c4f145edd6c1e01c62fec3b7393022097`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BBF	14284 bytes
`font_02_sfnt_off0000888b.bin` `28472a57270255ab3eaf7bfef4e500001c1fa3093b76db943ae929b3d5873736`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x888B	16316 bytes

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