PDF malware analysis — malicious · 8a895f256e15663c

MALICIOUS

PDF

49.5 KB Created: 2020-08-29 19:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 981000d9a95f2762754955b7afeb2b90 SHA-1: a2220c4690157ce29cace49c14f9bbee7787f599 SHA-256: 8a895f256e15663c173d775fa2f43db82655a17893cda6867d210d9c2c52efad

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious due to its inclusion of a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/wix?keyword=goedkope+spinning+palen+voor+paaldan. The document body contains garbled text but also includes the same malicious URL, reinforcing its role in a potential phishing or malware distribution scheme.

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.ru/wix?keyword=goedkope+spinning+palen+voor+paaldan
- https://static.usrfiles.com/ugd/921909_042ce185834d41c6af1c074654407097.pdf
- https://static.usrfiles.com/ugd/b8c837_05541944863e4a8cb301cb6a7e10482f.pdf
- https://static.usrfiles.com/ugd/b8c837_a204aadcb32040fea2a3631dabc818db.pdf
- https://static.usrfiles.com/ugd/b8c837_110b34c7ec0a4ac3aff8ba136e43813c.pdf
- https://static.usrfiles.com/ugd/e3c460_8247489184984bf1bcfb92a8858ce32d.pdf
- https://static.usrfiles.com/ugd/39cb9d_e7055b1e1c9640398f1cbd512961f9b7.pdf
- https://static.usrfiles.com/ugd/b8c837_8f537d568060488083cfdf7324a94cd4.pdf
- https://static.usrfiles.com/ugd/b8c837_acbfa7ca3b9c4fe9a85350a59f8da039.pdf
- https://static.usrfiles.com/ugd/b8c837_8efc84ac797149e7b103bb65430a3f90.pdf
- https://static.usrfiles.com/ugd/b8c837_01436e5cf17443a6b313bf18edc2cb05.pdf
- https://static.usrfiles.com/ugd/a771bd_81135e2f78a54341bd463bf086df877d.pdf
- https://static.usrfiles.com/ugd/1f2646_4e0ce0a6c0b54d08890ce4cd75933b50.pdf
- https://static.usrfiles.com/ugd/b8c837_ba3326000c4c431b9463f4676d64e347.pdf
- https://static.usrfiles.com/ugd/b8c837_2dfc249b14ab4e81a7130869703d6bdf.pdf
- https://static.usrfiles.com/ugd/b8c837_25f619fe66cf499da623bac0f75446b7.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006bcc.bin` `3a669e8379682fb04aff64bd62652edbd7ab283a38ab02055cc3a32c3636ebd4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BCC	5280 bytes
`font_01_sfnt_off00007de2.bin` `70c62ee3f4e2b981dd2e145f9fb5b20708bed5045e3530cc5948b88e569be7a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DE2	11400 bytes
`font_02_sfnt_off0000a34d.bin` `975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA34D	16312 bytes

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