PDF malware analysis — malicious · 9159515a1310f5d0

MALICIOUS

PDF

40.7 KB Created: 2020-09-01 11:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7650d166d9672570dbbffe56ee752766 SHA-1: 6ac8a719d654b0cf1c6215d9d37f7173a583fb01 SHA-256: 9159515a1310f5d05afee8f9c50fed29232514fe819ad153b764deff86c4d576

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=adm++manager+pro+apk+for+pc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to 'static.usrfiles.com'. The document body, though heavily obfuscated, contains these URLs, suggesting a lure to download or interact with external content. The presence of a visual download button heuristic further supports the malicious intent.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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=adm++manager+pro+apk+for+pc
- https://static.usrfiles.com/ugd/b8c837_4dd1d581fa7e47719c9a1f79b245599e.pdf
- https://static.usrfiles.com/ugd/b3bc21_8c46293855a8498e8a41dfed63afba4f.pdf
- https://static.usrfiles.com/ugd/253000_e0e66922212e439e85e4ffdb9f7dced4.pdf
- https://static.usrfiles.com/ugd/eb4c03_441b05646ee6414391ac1a8cc64f812e.pdf
- https://static.usrfiles.com/ugd/b13fd1_d62f77252ccc417b9c3acee8e347105a.pdf
- https://static.usrfiles.com/ugd/b8c837_681f2cc7fc5c4ddc8bff164975e67588.pdf
- https://static.usrfiles.com/ugd/9c3693_2701e05a29a948308ddc6acb0ffbc1e6.pdf
- https://static.usrfiles.com/ugd/b8c837_6568709660034f11854a1b38b5813c54.pdf
- https://static.usrfiles.com/ugd/b8c837_8851dfdb54e04661ba2ea098443a24b2.pdf
- https://static.usrfiles.com/ugd/3ce946_49a5bf52208a485d94f986abd195f63b.pdf
- https://static.usrfiles.com/ugd/97634b_2b966cc0755c48b99884316804392190.pdf
- https://static.usrfiles.com/ugd/4bdc6d_e097dddc05354518ac251e3597aeb823.pdf
- https://static.usrfiles.com/ugd/af0aa9_725e8a9574c04ab2a11c625626c31b65.pdf
- https://static.usrfiles.com/ugd/008e52_322f8c177a674dcc8b3a4280fe2fc1dd.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_off0000613e.bin` `1c04700b2a05a3f38d0c112659bee435e56af502c886e4490ffb4d503fdb9b73`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x613E	5316 bytes
`font_01_sfnt_off00007346.bin` `7c278e65fb0e889b2cb40aa85994eedb3618b1c7be857798d532ba4e87d2f234`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7346	10272 bytes

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