PDF malware analysis — malicious · 299cfc2312867c65

MALICIOUS

PDF

68.2 KB Created: 2020-08-06 12:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ae1dff1826fb0d5e3e37a8ce78cf030c SHA-1: fbcaca0f3599567153393300b2e61e7f086a5b14 SHA-256: 299cfc2312867c65ba5722379c9b6d3eeace61455025aaba3597ab985de78a46

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 'https://ttraff.cc/wb?keyword=attachment%20styles%20chart%20pdf'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack pattern.

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=attachment%20styles%20chart%20pdf
- http://files.dc-struggle.com/uploads/1/3/1/8/131872238/1782890.pdf
- http://files.bluedahliamakeup.com/uploads/1/3/1/4/131437982/dusedebebemit_zowusutupuwa_begise.pdf
- http://files.bluecrabkeyhoa.com/uploads/1/3/0/8/130815228/simotig.pdf
- https://cdn.shopify.com/s/files/1/0429/1903/5033/files/406906188.pdf
- https://cdn.shopify.com/s/files/1/0431/0099/5741/files/47915989514.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5688/files/fakumatibomawedas.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
- https://cdn.shopify.com/s/files/1/0433/7228/2008/files/98016454997.pdf
- https://cdn.shopify.com/s/files/1/0429/6183/0037/files/rodiguxipe.pdf
- https://cdn.shopify.com/s/files/1/0431/0564/8801/files/xekolugumot.pdf
- https://cdn.shopify.com/s/files/1/0429/0609/1673/files/jedibomadotuwol.pdf
- https://cdn.shopify.com/s/files/1/0431/0161/8327/files/descargar_test_de_matrices_progresivas_de_raven.pdf
- https://cdn.shopify.com/s/files/1/0440/8757/4678/files/jilemaganebasagelutifif.pdf
- https://cdn.shopify.com/s/files/1/0434/4751/7341/files/kikedubadexasabisovojosam.pdf
- https://cdn.shopify.com/s/files/1/0433/2758/6472/files/voroxi.pdf
- https://cdn.shopify.com/s/files/1/0431/2757/0596/files/41099290630.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_off0000ccbb.bin` `46b4fabb0bc47f89a3336f95338724251be88eb2a26f1f2fe40c169e3080877b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCCBB	5484 bytes
`font_01_sfnt_off0000df45.bin` `dd6e7b4afd9b96994c3d793fcfc5a035be85251e591caef5dec0e8c8231d04ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF45	10768 bytes

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