PDF malware analysis — malicious · 311442dc4c485eeb

MALICIOUS

PDF

48.9 KB Created: 2020-07-31 07:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8a79f23971733b346af25f5aeaf67d10 SHA-1: b3ea91a3149d973bdb0d94a89bc77b044bbada2f SHA-256: 311442dc4c485eeb90557c6a412e0252f9054512fd18394e1f9e43ff8cdfc94d

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to ttraff.com, a known malicious redirector. Another critical heuristic, PDF_SEO_LINK_FARM, highlights the presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains text related to decision trees and the wkhtmltopdf application, likely serving as a lure.

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.com/pify?keyword=ejercicios+de+arboles+de+decision+resueltos+pdf
- http://files.mrbagothistory.com/uploads/1/3/0/9/130968985/8617117.pdf
- http://files.inspirevoices.co.uk/uploads/1/3/0/8/130814644/mirobev-nasirel-zidelerekik.pdf
- http://files.eastwinchester.org/uploads/1/3/0/7/130739239/38456c3390.pdf
- https://cdn.shopify.com/s/files/1/0429/9282/8579/files/kugewiwupozonita.pdf
- https://cdn.shopify.com/s/files/1/0436/3547/4590/files/vatuzudijefisizedoli.pdf
- https://cdn.shopify.com/s/files/1/0432/1368/4891/files/rugometob.pdf
- https://cdn.shopify.com/s/files/1/0430/8166/2628/files/nalomagi.pdf
- https://cdn.shopify.com/s/files/1/0437/4714/7928/files/56087510346.pdf
- https://cdn.shopify.com/s/files/1/0432/3953/8851/files/kekuwojelufabunemuvate.pdf
- https://cdn.shopify.com/s/files/1/0433/6097/7048/files/7306527770.pdf
- https://cdn.shopify.com/s/files/1/0432/0693/4688/files/fanegu.pdf
- https://cdn.shopify.com/s/files/1/0432/8855/9780/files/45820398387.pdf
- https://cdn.shopify.com/s/files/1/0427/4959/1718/files/54994989554.pdf
- https://cdn.shopify.com/s/files/1/0432/1135/8372/files/mekakumupeno.pdf
- https://cdn.shopify.com/s/files/1/0432/5661/0969/files/xilezaj.pdf
- https://cdn.shopify.com/s/files/1/0430/4191/5042/files/16602114840.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/
- https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007c66.bin` `4ed7b24654199aeb7cb913dc2c16b9163bef2a2894299d1d776c061a4eb45d92`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C66	5204 bytes
`font_01_sfnt_off00008e20.bin` `dcaaef0bbfa05278a00f8fdbf2e97c465da40448d7f26795debe6d25183fdec7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E20	11776 bytes

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