PDF malware analysis — malicious · 9f9990507d25f945

MALICIOUS

PDF

40.4 KB Created: 2020-09-01 12:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dcbd8df09b03787f6a6f4de8eb77fefe SHA-1: 6c2e43f5b83b615de27d30e15649e7154aecdb7c SHA-256: 9f9990507d25f945d826012643a789616e8ce441d63b6f483c621acf593c5cc4

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document also contains a large number of links to other PDFs hosted on Shopify and static.usrfiles.com, suggesting a link farm or SEO poisoning attempt. No scripts were extracted from this sample.

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.com/wix?keyword=please+cascade+this+information+meaning
- https://cdn.shopify.com/s/files/1/0456/4477/5591/files/giresun_weather_report.pdf
- https://cdn.shopify.com/s/files/1/0431/7249/5519/files/16116767364.pdf
- https://cdn.shopify.com/s/files/1/0432/9432/6944/files/majure.pdf
- https://static.usrfiles.com/ugd/b8c837_92460ea311c6494fae54c155528fd7d6.pdf
- https://static.usrfiles.com/ugd/1849a1_e8f701d706614183b3a089b2df18f4f8.pdf
- https://static.usrfiles.com/ugd/90423f_b41d48c3bb844d6e95fcab988e93ed09.pdf
- https://static.usrfiles.com/ugd/724fb5_3fef6e60de1a40809e014f320eacdd65.pdf
- https://static.usrfiles.com/ugd/73f3b0_90e2f86a249f4b45be6bf1aabdf7a6ff.pdf
- https://static.usrfiles.com/ugd/822ecd_d45acc42ef5b4fdf9971bdda236e1cc2.pdf
- https://cdn.shopify.com/s/files/1/0430/6409/8970/files/saxunagemufevodedetavasu.pdf
- https://cdn.shopify.com/s/files/1/0431/6141/9927/files/68544014966.pdf
- https://cdn.shopify.com/s/files/1/0437/8004/7010/files/sorusopizisigus.pdf
- https://cdn.shopify.com/s/files/1/0448/2826/2560/files/reversal_patterns_technical_analysis.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_off00005da6.bin` `296e3b3287d953ff16532c0fd3c51397965168e69b4ac1abc7a983b661511163`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DA6	5436 bytes
`font_01_sfnt_off00006ff7.bin` `fc4d09e070736a5ad5af30f7c1e1eedeac1f1a574dcfd22524150f90c3ce4664`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FF7	10800 bytes

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