PDF malware analysis — malicious · 4d318d4249e4d94a

MALICIOUS

PDF

33.9 KB Created: 2020-08-30 06:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4ae392c7a19e55e67249b2e20f99a7d6 SHA-1: a02a05848c442824e5d60aaf7ac1037e5417f1db SHA-256: 4d318d4249e4d94a550ceaec00602fc22132459014556ae8ba853c5420dcbe5a

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as information about a 'maple chase programmable thermostat'. The document also functions as a link farm, embedding numerous links to PDFs hosted on static.usrfiles.com, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious URL and the link farm heuristic strongly indicate a phishing or redirection attempt.

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=maple+chase+programmable+thermostat
- https://static.usrfiles.com/ugd/c1de29_898556ec09d442c8adbd2dce285967c6.pdf
- https://static.usrfiles.com/ugd/eda9ba_1e3cd65e0b49484cb2970cbbe7cd7e5d.pdf
- https://static.usrfiles.com/ugd/b8c837_f7b99b6464864c338379f84ed86d63f1.pdf
- https://static.usrfiles.com/ugd/b8c837_e61ca8ca5bbe4d16a1c09b3faeaadb92.pdf
- https://static.usrfiles.com/ugd/4dd980_5de7ce065f2344a18b67279432781514.pdf
- https://static.usrfiles.com/ugd/3826db_397923248df0401fa4448376a6dd5079.pdf
- https://static.usrfiles.com/ugd/b8c837_01fac31c07364ba190484afae6da9376.pdf
- https://static.usrfiles.com/ugd/7e6083_3a6aa6373696413db1a2e3662096bcc5.pdf
- https://static.usrfiles.com/ugd/8de238_9d63af1e91bc40ee85534e16e90c4414.pdf
- https://static.usrfiles.com/ugd/2e16aa_36492180c47d4163ad8303643ca22103.pdf
- https://cdn.shopify.com/s/files/1/0437/5733/8776/files/pathfinder_magus_guide.pdf
- https://cdn.shopify.com/s/files/1/0434/7622/2114/files/check_my_current_address_dmv_california.pdf
- https://static.usrfiles.com/ugd/432b07_0549179d243645eab913b6aae72d3d5d.pdf
- https://static.usrfiles.com/ugd/b8c837_1ea3c6edf0074ba0be4996e64c65fcdb.pdf
- https://static.usrfiles.com/ugd/bdeb4c_02d41604fdd94ee69d8445b4854f33fe.pdf
- https://static.usrfiles.com/ugd/b8c837_f1688ae0d4854c749b564f0fb6d15fe0.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_off000047cf.bin` `09abe71ef521989062189a9e1ff971229cfa1a7f0588a49dfda1611a2881d115`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x47CF	5492 bytes
`font_01_sfnt_off00005a5b.bin` `ab8aee861debcc47b9e33b20670a47e45bf4da349d7afdc5118f0b9425d6a47c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A5B	9512 bytes

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