PDF malware analysis — malicious · 1858e2a8096e31f5

MALICIOUS

PDF

37.0 KB Created: 2020-08-29 21:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0290ff34b2a4110af13f3d913e6d99b7 SHA-1: 5a64a86b71c55e9dcf8dc1e65fd8c0b6ed474376 SHA-256: 1858e2a8096e31f52b71e3d2991429b88234bf353e98e30ac26dfe6487e37a45

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to manipulate search engine results or distribute further malicious content. The primary malicious URL identified is https://ttraff.ru/wix?keyword=a++guide+to+it+technical+support+%2528hardware+and+software%2529+9th+edition+pdf+download.

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=a++guide+to+it+technical+support+%2528hardware+and+software%2529+9th+edition+pdf+download
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/ace02d_30811d33b36647deb97315606234dae9.pdf
- https://static.usrfiles.com/ugd/b8c837_510266711ea44240aaaeddf1757f5147.pdf
- https://static.usrfiles.com/ugd/b8c837_499df2a4183c4540862eb77bcb453d1c.pdf
- https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.pdf
- https://static.usrfiles.com/ugd/b8c837_7b45f645a8f446e1a05ee991c4a83db5.pdf
- https://static.usrfiles.com/ugd/b8c837_04ba36cb25b14989b3ddd3fe3d2cb6fb.pdf
- https://static.usrfiles.com/ugd/4dd980_ec69d670cc6f486781b913856f803aa5.pdf
- https://cdn.shopify.com/s/files/1/0439/0594/1672/files/surumu.pdf
- https://cdn.shopify.com/s/files/1/0429/2440/8988/files/lurobisidipidu.pdf
- https://cdn.shopify.com/s/files/1/0454/6330/6392/files/44373391183.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_off00004e3e.bin` `e49a2f5a46a607584af08c6e2b347d2c5cff7b05aee1bdb73336699277ce712b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E3E	5808 bytes
`font_01_sfnt_off0000621c.bin` `78b23061835bc91c9e2e1fdcf4b76288edea8e41afb78914f348ac85322c7ef0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x621C	10624 bytes

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