PDF malware analysis — malicious · b545c3473e89c9b8

MALICIOUS

PDF

40.0 KB Created: 2020-09-03 04:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0de2f7ee905e2f1665aefbcce7fa8e2b SHA-1: 3a6058629670207f35fcc1d91f50c86137dad684 SHA-256: b545c3473e89c9b89286b961e6e85472f2235c63166b6c51f3312da3a65383b3

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL is https://ttraff.club/wix?keyword=hyaluronic+acid+collagen+face+sheet+mask, which is likely part of a phishing or scam campaign. The document body, though heavily corrupted, contains the same product title as the malicious URL, suggesting a lure to a fake product page. The ML classifier strongly supports the malicious verdict.

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.club/wix?keyword=hyaluronic+acid+collagen+face+sheet+mask
- https://cdn.shopify.com/s/files/1/0431/5178/6145/files/polefibefezewixafatol.pdf
- https://cdn.shopify.com/s/files/1/0432/6447/5304/files/business_contingency_plan_template.pdf
- https://cdn.shopify.com/s/files/1/0432/7738/5892/files/45826117936.pdf
- https://static.usrfiles.com/ugd/027f51_da9f9bec1ed34b42815c96ad98f1fa1b.pdf
- https://static.usrfiles.com/ugd/7c3584_c798ab88b6ae4f74837e1f6f847bf20a.pdf
- https://cdn.shopify.com/s/files/1/0434/5479/1832/files/65549439827.pdf
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/zexufowalelunitopapo.pdf
- https://cdn.shopify.com/s/files/1/0432/1961/5901/files/breath_of_the_wild_walkthrough.pdf
- https://static.usrfiles.com/ugd/9ced5d_14634726712b49e4ae4f8cd000e835eb.pdf
- https://static.usrfiles.com/ugd/b8c837_8eb1866d71f94eedb18dda8893a49f48.pdf
- https://static.usrfiles.com/ugd/b8c837_ff09e15e8566437586da748741ea1a6a.pdf
- https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.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_off00005cd6.bin` `40034c2312cfd8dc376f88c5b35490e9cc61ff60a22637eb6a50ccb483b5e70e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CD6	5564 bytes
`font_01_sfnt_off00006f9d.bin` `81f8789c88f70105d6cfc4a54aa49fc16569e23baacc242a2137a7c31a563b1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F9D	10536 bytes

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