PDF malware analysis — malicious · f593055340b9e7d4

MALICIOUS

PDF

43.7 KB Created: 2020-08-29 03:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b3a0dd5bd2e64f25b2020aab3c7d0443 SHA-1: e58f752149e1df0da3297ca119cc5c483a2efc7e SHA-256: f593055340b9e7d400772e542587a9a4dbac82242d9f776f7cb8aee5f3548b2c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links directs to `ttraff.com`, which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or obfuscated, but the presence of numerous links suggests an attempt to manipulate search engine results or redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=que+es+sensopercepci%2525C3%2525B3n+resumen
- https://cdn.shopify.com/s/files/1/0429/8817/5513/files/77283248295.pdf
- https://cdn.shopify.com/s/files/1/0431/6502/4416/files/36623565021.pdf
- https://cdn.shopify.com/s/files/1/0427/7259/4844/files/31886140821.pdf
- https://static.usrfiles.com/ugd/b8c837_8f18b93e00c5441d98dc47483d6ac28a.pdf
- https://static.usrfiles.com/ugd/b8c837_994f233a8f7142e2aa9eb3e797c90b38.pdf
- https://static.usrfiles.com/ugd/b8c837_01688f4ef31b44a4a646742d57f87cd7.pdf
- https://static.usrfiles.com/ugd/b8c837_794307b8d8e84c9a8cab8736ac8671bf.pdf
- https://static.usrfiles.com/ugd/b8c837_f1147572b55143cc93c1682e22796521.pdf
- https://static.usrfiles.com/ugd/b8c837_95bde3f0ece449be9e72462082bb8498.pdf
- https://static.usrfiles.com/ugd/b8c837_a2a6c8fbb3504d82b26f3919f6b39bf7.pdf
- https://static.usrfiles.com/ugd/b8c837_bf74f1ab28294179afd852799f9906ea.pdf
- https://static.usrfiles.com/ugd/b8c837_a0d5f7a0aaf34f9e8a31f1af57986d26.pdf
- https://static.usrfiles.com/ugd/b8c837_1c7a0545dd644a4597e1808e05e2b81c.pdf
- https://static.usrfiles.com/ugd/b8c837_59ff829f94c3483a8c4b6a6e784a5410.pdf
- https://static.usrfiles.com/ugd/b8c837_bc08f15142aa476e932659dbf9068f2d.pdf
- https://static.usrfiles.com/ugd/b8c837_19154cf37f1f486abfee7d2ebc6f5201.pdf
- https://static.usrfiles.com/ugd/b8c837_b55c0ccdbc1f4eb6914d3a62434ae03b.pdf
- https://static.usrfiles.com/ugd/b8c837_ff99d61fcb7346d69b9b03948866c7bd.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_off0000695b.bin` `051d6b8ca62c62accff966afca49a04bfaa4e130fd12a5ac00723d2b34fff15d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x695B	5036 bytes
`font_01_sfnt_off00007a20.bin` `c8237f08298b44ff76500dc42ab37588f9a0fb9915529817a5a1fa84962b9ba6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A20	11824 bytes

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