PDF malware analysis — malicious · 10f84464a1704476

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 16:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9fe9f9dd97b77d4bb474f9adef39d813 SHA-1: 2451a9ad28cd02afe6080c1feb3d9038394a50e9 SHA-256: 10f84464a170447682a1b68e47bf66d61b233d4c4b7b71dc8612b3598966f952

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL which is likely intended to trick the user into clicking it. The PDF also hosts a large number of external links, suggesting a link farm for SEO manipulation or to distribute malicious content.

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=powerflex+525+ethernet+user+manual
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/d4a9d6_557f3a81d0454b88859ee47c08358d36.pdf
- https://static.usrfiles.com/ugd/ea78e0_61bc274135ae4f599da8da39530bef63.pdf
- https://static.usrfiles.com/ugd/b8c837_8049b98673904312b7b2d5c28064677c.pdf
- https://cdn.shopify.com/s/files/1/0427/9838/3260/files/4561510925.pdf
- https://cdn.shopify.com/s/files/1/0432/6568/7717/files/calais_map.pdf
- https://static.usrfiles.com/ugd/a382ee_bde3644e85ce48b5bc8c6d670031805e.pdf
- https://static.usrfiles.com/ugd/b8c837_c468c2040188450289c3949a2aa6740d.pdf
- https://static.usrfiles.com/ugd/7d21c0_d2f6b44495624b639650bcd078f04f9a.pdf
- https://static.usrfiles.com/ugd/696117_80b1d3295dda4f4f825657b9ab3f9c58.pdf
- https://static.usrfiles.com/ugd/b8c837_3edc7497a387403b9bba10a9cfa8e913.pdf
- https://static.usrfiles.com/ugd/51c472_aac0e4f740b546c580c5343276a3e204.pdf
- https://static.usrfiles.com/ugd/b8c837_df6601f92c884f0786c7ba4c1e132fd1.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_off00006b76.bin` `dab2633db2ed946289f2ed79327c78bd44abfe83e776e1d3d36e72666bee05e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B76	5424 bytes
`font_01_sfnt_off00007dd9.bin` `74ec427722caf40cd480e0734559ead239035849fd8d972d565e3af43c83f5b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DD9	10256 bytes

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