PDF malware analysis — malicious · 3ade8702046eff7e

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 14:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 15262aca6e6e187e4f7de07cc9819738 SHA-1: ab53c300dc8a343ab5fb8c5a17f2899db7cc7bfd SHA-256: 3ade8702046eff7e5239c9561bef1e3511c807cad4fa3e875cc3b5aea193e86c

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=the+real+book+of+real+estate+pdf'. This URL is likely part of a phishing or malware distribution chain. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to static.usrfiles.com. 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=the+real+book+of+real+estate+pdf
- https://static.usrfiles.com/ugd/34e21e_0986fbc6295a418e95acef6fafa5151e.pdf
- https://static.usrfiles.com/ugd/db93e9_7c15c9531edf4924a2343a9db72aa458.pdf
- https://static.usrfiles.com/ugd/b8c837_b7fb09465e844f60a5f78eeb576c7fdd.pdf
- https://static.usrfiles.com/ugd/0aab01_3c2a024d838a47a39f4628b0628d73eb.pdf
- https://cdn.shopify.com/s/files/1/0432/2931/5229/files/16995387890.pdf
- https://cdn.shopify.com/s/files/1/0440/3625/9990/files/ags_algebra_1.pdf
- https://static.usrfiles.com/ugd/b8c837_0f6ca73f67e24d3f811886b111bc1d4b.pdf
- https://static.usrfiles.com/ugd/f84671_7b81b1a8394d492a96b8aae7011d6252.pdf
- https://static.usrfiles.com/ugd/b8c837_20459afc700a42488d6fbbe7b22ba76b.pdf
- https://static.usrfiles.com/ugd/760101_2ceaa6a413044aae97d4ba2db15bcaea.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_off00005821.bin` `ceb641cba218c4e8cbf3a4700b3410f4ad5f28f8226bd54ad4bce0df03875dd6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5821	4916 bytes
`font_01_sfnt_off000068e0.bin` `5d3891217782d88749027490cd4c8a7edc6ed350c6a7a8359ebc859d7f65889f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68E0	10088 bytes
`font_02_sfnt_off00008b60.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B60	4324 bytes

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