PDF malware analysis — malicious · 2136216167c44a6a

MALICIOUS

PDF

42.1 KB Created: 2020-09-02 07:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6f1dd1ff800b7d9e46a3fea9d1809d6 SHA-1: 53aa1a11923053a255deaba0cd08e94b90f04278 SHA-256: 2136216167c44a6a155c94154cc061269a0d606af1065e320faef7db7aa46ddc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. It also features a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text but includes the URL https://ttraff.ru/wix?keyword=king+size+bed+sheet+size+australia, which is associated with malicious redirector infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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=king+size+bed+sheet+size+australia
- https://static.usrfiles.com/ugd/a2e20a_0a4d5eb534734445b85e6c2c014e4a80.pdf
- https://static.usrfiles.com/ugd/b8c837_a7c462d476e04256a53a9cc320975875.pdf
- https://static.usrfiles.com/ugd/b8c837_23b49f4d1d194ea6ab94de09e6916209.pdf
- https://static.usrfiles.com/ugd/9b5f63_1c22ceed464f4b4591c8cf0cd95bfef2.pdf
- https://static.usrfiles.com/ugd/2ac701_597d51740e9b495e84e0f41543c5b16e.pdf
- https://static.usrfiles.com/ugd/234f58_986a86d4502943caa325e0d10754415e.pdf
- https://static.usrfiles.com/ugd/565485_ec342ca2ad4f4174abbbacb0cfd30fa8.pdf
- https://static.usrfiles.com/ugd/26938b_f757140bba2e43fab402ecbc2c922f28.pdf
- https://static.usrfiles.com/ugd/b8c837_32af411ec13b4b5586ca4b5e2a8b5380.pdf
- https://cdn.shopify.com/s/files/1/0468/1390/5050/files/99429668662.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
- https://cdn.shopify.com/s/files/1/0434/7179/8424/files/vekeromeve.pdf
- https://static.usrfiles.com/ugd/c1c462_3639270d748641f29c6817262f361df2.pdf
- https://static.usrfiles.com/ugd/b8c837_32dd69a182684590841fdb8e5e222b40.pdf
- https://static.usrfiles.com/ugd/0251f0_bfa09e39de2c4df2a6ea30343a273003.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_off000066b1.bin` `78ef6196e1a415b56130f3408e343d9e6b1c1819bd90ff9084b960da72bd0875`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66B1	5244 bytes
`font_01_sfnt_off0000788c.bin` `321f8f482b07e4aff312997d96747c8d5e18de7748637b2e8b72803725474856`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x788C	10344 bytes

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