PDF malware analysis — malicious · d3fafe174b69c19a

MALICIOUS

PDF

61.0 KB Created: 2020-08-05 17:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 05c69ea37580327ee0c1c915cc985c9d SHA-1: 2a62deae738e471bc3dd96f3ccaccce04b71aad2 SHA-256: d3fafe174b69c19a4b9677c7e4d439a1e72976314b9826b0f36202a90fcf0130

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by an ML classifier and contains a large number of external links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.cc/wb?keyword=b&g%20circuit%20setter%20pdf, is a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content.

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.cc/wb?keyword=b&g%20circuit%20setter%20pdf
- http://files.coastandclearing.com/uploads/1/3/1/4/131453276/zibopisafijowu.pdf
- http://files.rtcranch.com/uploads/1/3/0/7/130740375/simoxusawu.pdf
- http://files.integritycincinnati.com/uploads/1/3/1/4/131453499/dekoxuwov.pdf
- http://files.christatomlinson.com/uploads/1/3/1/8/131871644/kukopeserud.pdf
- https://cdn.shopify.com/s/files/1/0429/9803/8679/files/zufodusavezibedu.pdf
- https://cdn.shopify.com/s/files/1/0438/4748/3552/files/dizigigagedununube.pdf
- https://cdn.shopify.com/s/files/1/0434/3808/0166/files/wujupowibakafibonipo.pdf
- https://cdn.shopify.com/s/files/1/0436/4982/6969/files/dozoxepakum.pdf
- https://cdn.shopify.com/s/files/1/0439/2566/7995/files/gerupobiwaxupufe.pdf
- https://cdn.shopify.com/s/files/1/0434/8212/0357/files/35413730995.pdf
- https://cdn.shopify.com/s/files/1/0437/2873/2314/files/sajuta.pdf
- https://cdn.shopify.com/s/files/1/0433/5150/7094/files/43453999847.pdf
- https://cdn.shopify.com/s/files/1/0440/0224/6814/files/rda_exam_2016.pdf
- https://cdn.shopify.com/s/files/1/0427/6797/4556/files/88420304274.pdf
- https://cdn.shopify.com/s/files/1/0428/8921/6167/files/vogejuf.pdf
- https://cdn.shopify.com/s/files/1/0429/5698/0377/files/jevuteparazoserajovopes.pdf
- https://cdn.shopify.com/s/files/1/0437/9597/2256/files/official_zaytoven_drum_kit_2016.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_off00009f56.bin` `d50822623e89c8115b0f5ed2ce7f5a9ddc83896b89d44c93b455b6155f7936d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F56	4204 bytes
`font_01_sfnt_off0000ada4.bin` `488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xADA4	6148 bytes
`font_02_sfnt_off0000bd84.bin` `5c11bd6d273c71ead9d2300f26d3e09134d5575a5c4f16d19df6b62d17f6c745`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD84	12752 bytes

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