PDF malware analysis — malicious · b897343fcd4e9618

MALICIOUS

PDF

46.0 KB Created: 2020-08-31 02:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b6b026ab8562927a35d805de81214fe6 SHA-1: d7fd878241b4c5a36d6bea95f235ba88d02165d3 SHA-256: b897343fcd4e96181bbcc0ac657649b974a5ab271eec074b8bfb9ed8afb05df4

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, which is also present in the document body. This link, 'https://ttraff.ru/wix?keyword=livro+os+argonautas+do+pac%2525C3%2525ADfico+ocidental+pdf', is designed to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are benign but serve to obscure the malicious one. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=livro+os+argonautas+do+pac%2525C3%2525ADfico+ocidental+pdf
- https://cdn.shopify.com/s/files/1/0430/8058/1274/files/medical_physiology_by_sembulingam_7th_edition.pdf
- https://cdn.shopify.com/s/files/1/0429/8758/5699/files/annotations_in_python.pdf
- https://cdn.shopify.com/s/files/1/0439/0486/0328/files/alternating_current_motor.pdf
- https://static.usrfiles.com/ugd/7ff653_a517c5df0aab4d349b6915323162590f.pdf
- https://static.usrfiles.com/ugd/3aee12_36d5f8b1cea646f180bf1f34ab248aee.pdf
- https://static.usrfiles.com/ugd/d4da64_a739ecb1bbf04c8a9e17baf20f32aadb.pdf
- https://cdn.shopify.com/s/files/1/0438/4342/0320/files/xaxanozopab.pdf
- https://cdn.shopify.com/s/files/1/0431/7832/8221/files/derogatory_public_records_on_credit_report.pdf
- https://static.usrfiles.com/ugd/b8c837_86b8e7b476734cdd85e02ed1c7314eeb.pdf
- https://static.usrfiles.com/ugd/b8c837_725656b0a7a34cee9ba910416be135d2.pdf
- https://static.usrfiles.com/ugd/5b9a87_5d0263bdc9b144369ca30d046e99f90d.pdf
- https://static.usrfiles.com/ugd/40512e_ce894221dcb5430ebd789d6a60645435.pdf
- https://static.usrfiles.com/ugd/a2e20a_92056c7b01ac48dc802cadf1f82f8311.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_off000065aa.bin` `bb0c4be4a6e242a8cc4aed8c12936191d98f7d1691e1bce398e549e486145606`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65AA	5260 bytes
`font_01_sfnt_off000077a6.bin` `41061d3e6734bcbae23957b017c8854438cbeb1d668bd8da21672eeba2bde731`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77A6	10092 bytes
`font_02_sfnt_off00009a29.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A29	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.