PDF malware analysis — malicious · b5f27213091b2947

MALICIOUS

PDF

43.3 KB Created: 2020-09-01 10:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9525301bbf7c65d94a1d88afc780f2b4 SHA-1: f8058867f3cd15f718dd7af266ede203ea37d2f0 SHA-256: b5f27213091b2947924f6734a3e9834be3317ca89491b69bab0cdd1710b941f6

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=weekly+check+off+list+template'. This URL is presented within the document body, disguised as a 'weekly check off list template', to entice users to click it. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, suggesting a broader campaign to distribute malicious content or manipulate search engine results. No scripts were extracted, and the document body itself is heavily obfuscated, but the primary malicious intent appears to be redirection to a malicious site.

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.com/wix?keyword=weekly+check+off+list+template
- https://static.usrfiles.com/ugd/fbccce_5ff731e62d464102b9b4bf2b87036d58.pdf
- https://static.usrfiles.com/ugd/1df9ea_668f9f920aa2449cb5a60604e23a98a9.pdf
- https://static.usrfiles.com/ugd/96bf9d_6189790cfb9a404bba80d04e7c9c909f.pdf
- https://static.usrfiles.com/ugd/b8c837_3d6b61e60e3f448f8a4c378df59dd932.pdf
- https://static.usrfiles.com/ugd/2ca22b_34bb08c04a5c4697a9d114dd679460c8.pdf
- https://static.usrfiles.com/ugd/ca300b_71132e15675c4d928e7d288abe70b005.pdf
- https://cdn.shopify.com/s/files/1/0429/5704/5913/files/6058384009.pdf
- https://cdn.shopify.com/s/files/1/0429/0261/8278/files/repiboravigokejateroni.pdf
- https://cdn.shopify.com/s/files/1/0434/2090/9735/files/89843598545.pdf
- https://cdn.shopify.com/s/files/1/0436/1653/4685/files/anaganaganaga_song_naa.pdf
- https://cdn.shopify.com/s/files/1/0433/6313/9733/files/cambridge_soundworks_i765_manual.pdf
- https://static.usrfiles.com/ugd/0a0016_6dc675d9c6c2428eae4578db200c9ea6.pdf
- https://static.usrfiles.com/ugd/ee4a13_cb01b7ef563f4f368b5aa6f5da972643.pdf
- https://static.usrfiles.com/ugd/b8c837_905ba10ac67c468cbc64db95c1d6ab47.pdf
- https://static.usrfiles.com/ugd/c83fdb_37f2dfb82fd84c7f8e47de18fa6e7dea.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_off00006c5f.bin` `263e1330c577369e81e34ec31099ed2a11f80d15242b762a26e331fea32d0d0e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C5F	5340 bytes
`font_01_sfnt_off00007e81.bin` `f632ef4e8e7ef9158c4cfc6aa627eb09a9eacd04868a157058070a74fd81775d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E81	9980 bytes

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