PDF malware analysis — malicious · 8c56d2d91c86d888

MALICIOUS

PDF

73.7 KB Created: 2020-07-28 04:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4489bb89eb0c1a8dcf0ac12adef325aa SHA-1: a852c51e9567056b888a78080bc45bedddcf4a98 SHA-256: 8c56d2d91c86d88810a8620a284ec362e70cb296272dead4f0c42e7bff145d35

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, with a keyword suggesting a lure for technical information. Another heuristic flagged a link farm structure, pointing to multiple PDFs hosted on Shopify. The document body, though heavily obfuscated, contains metadata related to the authoring application and creation date, but no direct textual lure is discernible.

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=freenas+raid+guide
- http://files.colindecio.com/uploads/1/3/1/4/131453194/zedixodeteliz_linisulu.pdf
- http://files.betterbaseballcoaching.com/uploads/1/3/1/8/131871648/paduzenekanunotini.pdf
- http://files.lyssanda-designs.com/uploads/1/3/2/8/132816107/kumeredupewilidena.pdf
- https://cdn.shopify.com/s/files/1/0434/1320/9246/files/43382287769.pdf
- https://cdn.shopify.com/s/files/1/0438/0088/7457/files/fubab.pdf
- https://cdn.shopify.com/s/files/1/0431/7229/8918/files/93583993991.pdf
- https://cdn.shopify.com/s/files/1/0429/9676/0730/files/52812908705.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
- https://cdn.shopify.com/s/files/1/0427/9799/0055/files/suwavemekimelarudo.pdf
- https://cdn.shopify.com/s/files/1/0429/4885/3926/files/janok.pdf
- https://cdn.shopify.com/s/files/1/0431/6043/6887/files/86099445053.pdf
- https://cdn.shopify.com/s/files/1/0440/6879/8614/files/fanev.pdf
- https://cdn.shopify.com/s/files/1/0434/1560/1304/files/61872115306.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdf
- https://cdn.shopify.com/s/files/1/0430/5852/8405/files/wufenabovagiwitagujezi.pdf
- https://cdn.shopify.com/s/files/1/0432/3383/7224/files/wugorafamogupibibagenigi.pdf
- https://cdn.shopify.com/s/files/1/0435/1728/0408/files/36623695948.pdf
- https://cdn.shopify.com/s/files/1/0433/8181/7495/files/76323890808.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_off0000da44.bin` `4a0bd6ba898175544d015cf69c2e0c4e74c33f4e604de41db064b7bca2f489b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA44	4608 bytes
`font_01_sfnt_off0000e9dd.bin` `69881aa886a3c580dd73e1cc17b2487456504c046290d75af3fa44a369ed50f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9DD	15220 bytes

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