PDF malware analysis — malicious · 2efd75078db14b8e

MALICIOUS

PDF

37.7 KB Created: 2020-09-10 00:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 56fb71eed718f6e3f7d2d732cec66458 SHA-1: 48edd9c3e5cbcf886fae3ed818027058a0b67204 SHA-256: 2efd75078db14b8e7804c14393764d3a02c8ebacea7a141630805a66a902c92e

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, disguised as a 'Briggs Stratton power washer manual'. This is a common social engineering tactic to trick users into visiting potentially harmful sites. The PDF also contains a large number of links to external PDFs, many hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning attempt to improve search engine ranking for malicious content. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download page.

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=briggs+stratton+power+washer+manual
- https://static.usrfiles.com/ugd/10b11f_d7d673b3603f4449a4158baaf9a26d69.pdf
- https://static.usrfiles.com/ugd/1fa6dd_0026dea4672d4b158a5b7e4a3ef2cf37.pdf
- https://static.usrfiles.com/ugd/0f1814_916757b6de5848429fd292c70e339f7d.pdf
- https://static.usrfiles.com/ugd/5c139a_c647efb9e6144667a2d23ea59ecd8458.pdf
- https://static.usrfiles.com/ugd/7ea8bb_253959f815174542aac320b4e629ffed.pdf
- https://static.usrfiles.com/ugd/0aab01_30f9a0f039544fd4a81629705e41bbab.pdf
- https://static.usrfiles.com/ugd/12daa7_2d511b90756746409acb21d89f5680e3.pdf
- https://static.usrfiles.com/ugd/b8c837_4bccd6a9c70c48b3ae72f07ad2df43aa.pdf
- https://static.usrfiles.com/ugd/5f5755_81b03705231b496a933668bbdb88cfa4.pdf
- https://static.usrfiles.com/ugd/3b7182_52e02e19394649e895c2cc050c49813e.pdf
- https://static.usrfiles.com/ugd/b8c837_9cbe3226fcdf442c910801843d1f1c5d.pdf
- https://static.usrfiles.com/ugd/b8c837_d36efc66e1ff4671935da6f60229f0b9.pdf
- https://static.usrfiles.com/ugd/97368a_e0b3eca9731443b1ad21e1b83675797c.pdf
- https://static.usrfiles.com/ugd/a01749_df8da34009ba4113b58b856ab98e13e0.pdf
- https://static.usrfiles.com/ugd/dc6899_98ee91bcdbc04e4986f6cca51d4ff652.pdf
- https://static.usrfiles.com/ugd/5f226b_14189a1f52c447139df4e6f869c02c67.pdf
- https://static.usrfiles.com/ugd/3aca14_a724547ad56040a2a63bf93835258123.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_off00005599.bin` `756c653161223ed2276c58527094ad9b261a6a89b9b3cf2d02de367b6a98f6d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5599	5372 bytes
`font_01_sfnt_off000067ca.bin` `3ce06f96e6220f34374437c0b426996917791e322a90ebeadf29f89341b6eeff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67CA	10368 bytes

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