PDF malware analysis — malicious · 5738e9cb01165455

MALICIOUS

PDF

51.5 KB Created: 2020-08-31 13:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e1d94121483318ff5c67256e8683eedb SHA-1: d5de33f156735f0889cbd92d30a300e599220be8 SHA-256: 5738e9cb0116545551423caa80ef9ee33a764eacc4285083f95a691bd2ab0b5f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm of numerous PDF files hosted on Shopify and other domains, with one primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=neregul%25C4%2581ras+pusaud%25C5%25BEiem+m%25C4%2581jas+aizsard
- https://cdn.shopify.com/s/files/1/0431/3199/4280/files/fufupusutosidap.pdf
- https://cdn.shopify.com/s/files/1/0430/7940/1634/files/libros_abraham_hicks.pdf
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/rimufi.pdf
- https://static.usrfiles.com/ugd/db93e9_78bbe86e739341449fadb78af718b22f.pdf
- https://cdn.shopify.com/s/files/1/0432/6113/2968/files/62904550226.pdf
- https://cdn.shopify.com/s/files/1/0432/1440/5793/files/96581131705.pdf
- https://cdn.shopify.com/s/files/1/0437/9328/5277/files/35478070959.pdf
- https://static.usrfiles.com/ugd/b8c837_cf05ce16c7674097a1f1da5467c5178b.pdf
- https://static.usrfiles.com/ugd/dc98cc_2885f74d54e9485583cd7bc126a25205.pdf
- https://static.usrfiles.com/ugd/b8c837_81611af586b04fcfa36ba52566eaba96.pdf
- https://static.usrfiles.com/ugd/87d215_81153d461faa45759a1bfa75b9a37c78.pdf
- https://static.usrfiles.com/ugd/10e3af_2aaa73baf9d24910aa7b549bd58d41f7.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_off0000881e.bin` `d47d726150dcbdc5db5277eeb6a0f7e7651fdcf0bb2607b96a9dd95f5d712755`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x881E	5680 bytes
`font_01_sfnt_off00009acd.bin` `4328528fd6893fb10124d11dce538bf89a5fadcd76e154eccd04d32af66f3d5c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9ACD	11996 bytes

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