PDF malware analysis — malicious · 3ff446722e425268

MALICIOUS

PDF

45.2 KB Created: 2020-08-04 09:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a08ea8baa606350c0c1cfc40b642328f SHA-1: 5d07f3b812e2ba9823a2030896c247a02113fa95 SHA-256: 3ff446722e42526887c591527c000cdd6e0e5a694870d05a15b79f844a8c778d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=hernia+hiatal+pdf+medigraphic'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to medical information.

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=hernia+hiatal+pdf+medigraphic
- http://files.dollarcannulaclub.com/uploads/1/3/1/3/131381237/vopukimivipogoxuveda.pdf
- http://files.mybotoxboutique.com/uploads/1/3/0/9/130969572/xafoxavuza_jozijunepap_bikufewuxuzidig_retenolakamaje.pdf
- http://tomuxa.onurokcal.com/uploads/1/3/2/7/132710797/33050b5df35c46.pdf
- http://serisofug.wedding-flowers-perth.com.au/uploads/1/3/0/7/130775934/9376615.pdf
- https://cdn.shopify.com/s/files/1/0437/4963/8295/files/31216866674.pdf
- https://cdn.shopify.com/s/files/1/0437/7133/0709/files/auto_transport_bill_of_lading_form.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44484222312.pdf
- https://cdn.shopify.com/s/files/1/0427/4873/9740/files/82002926981.pdf
- https://cdn.shopify.com/s/files/1/0431/7410/1160/files/rinufemidikipituwotawiwi.pdf
- https://cdn.shopify.com/s/files/1/0431/6761/3077/files/ar15_speed_loader.pdf
- https://cdn.shopify.com/s/files/1/0434/0426/3585/files/python_list_to_string.pdf
- https://cdn.shopify.com/s/files/1/0440/9671/6952/files/kajuvubexu.pdf
- https://cdn.shopify.com/s/files/1/0429/1405/4300/files/89785011071.pdf
- https://cdn.shopify.com/s/files/1/0432/0778/6657/files/fitefuzazuximetop.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_off000066e6.bin` `39780a69c7ce430b5ee0e664228985f107aba54cb86d0eae8101a98af2a58485`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E6	5028 bytes
`font_01_sfnt_off000077ca.bin` `4e2a93f9f2203ebe162a8ca1fea876d9ad836413f3afaddef48a0ed68123b849`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77CA	10024 bytes
`font_02_sfnt_off00009a29.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A29	4324 bytes

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