PDF malware analysis — malicious · 9e503248ad7fba80

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 01:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e4a8d8bf2677a92b15fc2e0306519598 SHA-1: 1c4ad0469a33fe9db19d71c64d31de973567546a SHA-256: 9e503248ad7fba80c8a8d2bf7df7009c8bfce12aa15b39288ce42638aad69b81

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=the+curse+of+atreus'. This indicates the document's primary purpose is to lure users to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=the+curse+of+atreus
- https://cdn.shopify.com/s/files/1/0430/8228/5216/files/66074812791.pdf
- https://cdn.shopify.com/s/files/1/0439/0558/1211/files/badegawexolilor.pdf
- https://cdn.shopify.com/s/files/1/0433/7631/2478/files/juzijogaxeke.pdf
- https://cdn.shopify.com/s/files/1/0440/0542/5310/files/sadenukujerivazokosasu.pdf
- https://cdn.shopify.com/s/files/1/0434/8674/0646/files/10886208943.pdf
- https://static.usrfiles.com/ugd/b5aed9_a689672f0eef4835a4613bd4da36f336.pdf
- https://static.usrfiles.com/ugd/b8c837_ca6aca370f124b1b9c1597a557f422a9.pdf
- https://cdn.shopify.com/s/files/1/0432/8790/4422/files/31917196577.pdf
- https://cdn.shopify.com/s/files/1/0435/6292/6229/files/70022014966.pdf
- https://static.usrfiles.com/ugd/de02f3_92921c305ff04de8b79c4b9f8a4cd305.pdf
- https://static.usrfiles.com/ugd/b8c837_4d7cf7449f994085882a662e3ea1e713.pdf
- https://static.usrfiles.com/ugd/e6092c_44900ce4b9a04fa082ab0933c88b14ab.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_off00006932.bin` `57f1879b9c7d1164c4febf92f770a3eb72de4404e235821b82051bb39e194d57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6932	4888 bytes
`font_01_sfnt_off000079cc.bin` `fa3ee7f58acf96b25a649fd12cf8d4178a76c4e2c342b9c314f46099680c1381`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79CC	12036 bytes

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