PDF malware analysis — malicious · e81316cefa806873

MALICIOUS

PDF

40.9 KB Created: 2020-08-03 12:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b1d038f4b0db14064eabb4146f60359f SHA-1: 7c6dc0d361859de11a49c5a9fb9abd34ccdbb59f SHA-256: e81316cefa806873a21782a089bfbd65b2478a6eaeb62b60a962e6ac8da6bcda

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, a common SEO poisoning tactic. One of the primary links, https://ttraff.ru/pify?keyword=daughter+of+destiny+benazir+bhutto+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious.

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=daughter+of+destiny+benazir+bhutto+pdf
- http://files.shawfamilywellness.com/uploads/1/3/0/8/130814101/6132334.pdf
- http://files.leeoptical-malden.net/uploads/1/3/0/8/130814492/duwix.pdf
- http://files.easetherapy.uk/uploads/1/3/1/0/131070105/9a6b91bbb.pdf
- http://files.4hcampohio.org/uploads/1/3/0/9/130969399/mivole-luxetijevipoja-wijepa-sadegonosarutun.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdf
- https://cdn.shopify.com/s/files/1/0429/3260/0985/files/17269419293.pdf
- https://cdn.shopify.com/s/files/1/0431/0099/5741/files/dusupisivap.pdf
- https://cdn.shopify.com/s/files/1/0439/4034/8059/files/sigofito.pdf
- https://cdn.shopify.com/s/files/1/0432/7315/8821/files/56221007755.pdf
- https://cdn.shopify.com/s/files/1/0433/2562/0374/files/pusojobiwoxekov.pdf
- https://cdn.shopify.com/s/files/1/0434/6730/9206/files/sidezulufapogo.pdf
- https://cdn.shopify.com/s/files/1/0430/0197/0837/files/86411155316.pdf
- https://cdn.shopify.com/s/files/1/0437/9148/3041/files/28162270792.pdf
- https://cdn.shopify.com/s/files/1/0440/5798/5189/files/silicon_valley_s04e01_torrent.pdf
- https://cdn.shopify.com/s/files/1/0428/6221/5324/files/50894347252.pdf
- https://cdn.shopify.com/s/files/1/0440/8374/0822/files/sowavevutemewew.pdf
- https://cdn.shopify.com/s/files/1/0439/0807/1576/files/novelekabamubo.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_off000061b8.bin` `7dafb0b089e15f61550bd7a646ff0a1c068ac5f9c006f9e2a9dbdd62d590a617`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61B8	5560 bytes
`font_01_sfnt_off000074ad.bin` `1c995dac751f616b35d3d51d0130d237122b4155380dd34aa7f7e8d16a92f3b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74AD	9936 bytes

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