PDF malware analysis — malicious · 5312ed4175381d45

MALICIOUS

PDF

40.2 KB Created: 2020-09-01 23:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ec8c53f315a7d86b1e2345ea7663a2b3 SHA-1: 2686a585cfaea0f634ddd1d4b3b829e8c8536c23 SHA-256: 5312ed4175381d45e17ffbb4b8f33604ee4d660df2e9a2a75359f96b0ac8ab2b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, also contains this URL and references to 'aronchupa video songs free', suggesting a lure to attract clicks. The presence of a PDF link farm further indicates an attempt to distribute malicious links. The ML classifier 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=aronchupa+video+songs+free
- https://static.usrfiles.com/ugd/0f5b72_c222f7c120364a5eacb3550074e4872a.pdf
- https://static.usrfiles.com/ugd/b3bc21_5673da6873b14dbf8a12672b038e0c28.pdf
- https://static.usrfiles.com/ugd/3f0e57_9be88b21eff34aed8645944bf5a3aa69.pdf
- https://static.usrfiles.com/ugd/9ff9b8_e564ddb77767439e8c988eba49ba8271.pdf
- https://cdn.shopify.com/s/files/1/0434/7835/2022/files/32197101326.pdf
- https://cdn.shopify.com/s/files/1/0466/6553/1557/files/questes_sobre_administrao_pblica.pdf
- https://static.usrfiles.com/ugd/d54300_6583fb046fa245b48ad5dfe7a8ab3cf4.pdf
- https://static.usrfiles.com/ugd/0286dd_479dcb1e296a4d889ee7c5062e9e8a20.pdf
- https://static.usrfiles.com/ugd/ed64d2_2767b1818625494ea842c0020d056348.pdf
- https://static.usrfiles.com/ugd/067ecb_48eaf7f84a0f4863a6b1f19f6256eacc.pdf
- https://cdn.shopify.com/s/files/1/0437/1195/5098/files/92348036329.pdf
- https://cdn.shopify.com/s/files/1/0455/6816/4005/files/simple_meeting_agenda_sample.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_off00005dee.bin` `cdef00cb10e03cb1cc093d36690333641b6b69cdf8c53b20a3818836db8ac678`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DEE	5436 bytes
`font_01_sfnt_off00007070.bin` `042403a46375c01848e36164642cbb23e94d3d853e271edac4be02ca83672658`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7070	11024 bytes

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