PDF malware analysis — malicious · dcf0b2243cfb9fa5

MALICIOUS

PDF

53.0 KB Created: 2020-08-05 02:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3a4293d75312eed01a1c899a2b5db6c SHA-1: c79b7e4881b7a1d8a0b8a2b30b56d9e1dfee89be SHA-256: dcf0b2243cfb9fa508d38abbfcdcb028fc80ab5a42a764060bf9b8a70d62a226

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with heuristics indicating a link farm and a malicious redirector. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to lure users to malicious sites, likely for phishing or malware distribution.

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=biography+books+pdf
- http://files.parosclassicalpianofestival.org/uploads/1/3/0/8/130813458/4464358.pdf
- http://files.redfishcottages.com/uploads/1/3/1/4/131483337/xugefur-xofejariba-raziv-kowajo.pdf
- http://files.abhyasayogabelfast.com/uploads/1/3/1/6/131606262/f78bf9e.pdf
- http://files.vittlevibes.com/uploads/1/3/0/7/130775982/aa9571c8b.pdf
- http://files.winzerfarmcda.com/uploads/1/3/1/6/131637658/b8269.pdf
- https://cdn.shopify.com/s/files/1/0436/8865/7049/files/gefugosidel.pdf
- https://cdn.shopify.com/s/files/1/0434/5813/4182/files/melogakopazazenewebixu.pdf
- https://cdn.shopify.com/s/files/1/0434/4355/2416/files/minurodukoragavila.pdf
- https://cdn.shopify.com/s/files/1/0434/2041/8198/files/goxolivebadudifi.pdf
- https://cdn.shopify.com/s/files/1/0436/2141/7123/files/79918928643.pdf
- https://cdn.shopify.com/s/files/1/0433/8286/6072/files/58595542764.pdf
- https://cdn.shopify.com/s/files/1/0436/1591/2098/files/11504284563.pdf
- https://cdn.shopify.com/s/files/1/0427/9032/2342/files/94222100544.pdf
- https://cdn.shopify.com/s/files/1/0431/8072/0294/files/piladopisolaboneravap.pdf
- https://cdn.shopify.com/s/files/1/0435/0243/6512/files/chevy_service_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/7932/7141/files/femota.pdf
- https://cdn.shopify.com/s/files/1/0437/8483/1125/files/16467507949.pdf
- https://cdn.shopify.com/s/files/1/0428/5700/5215/files/setesimazofo.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_off00009054.bin` `45305ed8eb2b451abf3389f51d3b3852ddcac53dacdf535800c10ceb61b94d0e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9054	5624 bytes
`font_01_sfnt_off0000a37d.bin` `5f01fdf3aaf94d9c11e5d0a7b91b6f26e910bcea8db55e4785eeaf865cbdcd94`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA37D	10356 bytes

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