PDF malware analysis — malicious · 0ea2ad238d681081

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 07:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4d1fc4cd60c5f218cd87b0a74b474c63 SHA-1: 65af7e9fd7027f4c68fe96c7e77d519d20ffb2ef SHA-256: 0ea2ad238d681081c19a620176841f513f6a2c0a8819012b6edf91a1637088c4

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that the document is designed to direct users to potentially harmful external content, likely as part of a phishing or scam campaign. The ML classifier also strongly flagged this PDF as malicious.

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.ru/wix?keyword=best+manual+transmission
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/3f0e57_9be88b21eff34aed8645944bf5a3aa69.pdf
- https://static.usrfiles.com/ugd/b8c837_6b3c28caa47b4b82a743482ddadeec86.pdf
- https://static.usrfiles.com/ugd/87a178_943e03eafbd44e86b13801850387c9e6.pdf
- https://static.usrfiles.com/ugd/2f8cea_6a92011882e84cb9bbaec7ff9361ce08.pdf
- https://static.usrfiles.com/ugd/e1d12c_1e91c329ddb442daae57bfc5a1ba3ad5.pdf
- https://static.usrfiles.com/ugd/cfa91a_f2e7cdd03f6b495c9cdb4adff7f8be1c.pdf
- https://cdn.shopify.com/s/files/1/0433/3069/9414/files/90711430995.pdf
- https://cdn.shopify.com/s/files/1/0441/3086/1208/files/software_serial_keys.pdf
- https://static.usrfiles.com/ugd/b8c837_aac5e23d58ae4d2b8f7d988aa512a163.pdf
- https://static.usrfiles.com/ugd/7dd30d_6ed234f30c0d4b699d94f9ef17877850.pdf
- https://static.usrfiles.com/ugd/b8c837_1cfbb0cd28954f08be2aa5ff55d086c3.pdf
- https://static.usrfiles.com/ugd/98857b_0015aee07f46497e8eeeecb28617d9f1.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006a71.bin` `0853cf67b784689c1b38e324eca18efe4428aa2a47bb02605d5a48862f2e5495`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A71	4880 bytes
`font_01_sfnt_off00007ae7.bin` `5d8e0f4e67da05e6fed2fb723587959f925265d6015149183723a016faa0fb97`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AE7	9848 bytes

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