PDF malware analysis — malicious · 37cfd2c921daaeb5

MALICIOUS

PDF

35.8 KB Created: 2020-09-08 16:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4fc5c287754ce4ab63221eec1048b0f5 SHA-1: 51cafe4b464b87808dfceee2679f746cc2174f8e SHA-256: 37cfd2c921daaeb5ca14bbd8c068b9c273f895ffb25a84dd6a38004c81167c4f

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.club, which is disguised as a weather report search result. This indicates a phishing or social engineering attempt to direct the user to malicious infrastructure. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, but the primary malicious behavior is the redirection to the suspicious URL.

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.club/wix?keyword=greenville+south+carolina+weather+report
- https://static.usrfiles.com/ugd/b80405_e8541cc6b24e40c7b860bd33ce23ded7.pdf
- https://static.usrfiles.com/ugd/1df9ea_2f24ad2479e441bb84f11f51a89fad55.pdf
- https://static.usrfiles.com/ugd/21a131_5423493a4b5343488469572bdbd14ead.pdf
- https://static.usrfiles.com/ugd/b3bc21_2a6072dc942f4024901b3178d03c84ad.pdf
- https://static.usrfiles.com/ugd/a4ea6c_72afc320e7c7456383c07804eb1fc40c.pdf
- https://static.usrfiles.com/ugd/b77b08_e41e950e8c1146adb060066a92fd68fb.pdf
- https://static.usrfiles.com/ugd/60933b_0f3415a8909e4f8b99cfc8a3fe596938.pdf
- https://static.usrfiles.com/ugd/b6bf5b_ffcf787467cc4f5ebe8d18ecd6e30b17.pdf
- https://static.usrfiles.com/ugd/1715bf_bd7e84cff01a475caa5fdfa1dff839f3.pdf
- https://static.usrfiles.com/ugd/1e533a_8089fdf0e3a74950862edd81855ce5d0.pdf
- https://static.usrfiles.com/ugd/b8c837_1318525437d04026a36bb8fd533469f4.pdf
- https://static.usrfiles.com/ugd/b8c837_ca40a1fc49a2463e946423faa3ff8284.pdf
- https://static.usrfiles.com/ugd/1b7c00_c8db24b077cc4672951821c8d39c7be5.pdf
- https://static.usrfiles.com/ugd/122077_fb1b17ed84f7472cbe4309cd290848ef.pdf
- https://static.usrfiles.com/ugd/238140_6554cd280dd1406a97e96706a2e970ce.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_off00004ee4.bin` `734f0ae3fb2f4ad928aba77994bb5bb75a2bd78f179bbf1967b5c50c60158870`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EE4	5204 bytes
`font_01_sfnt_off000060ae.bin` `09e0681c113c35f141e222d990d1acac0a2b67dba832cb3d8cf3b199ff18c51d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60AE	10032 bytes

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