PDF malware analysis — malicious · 1ef0673a29529673

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 13:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c196fff21bcfd36e2b4a85e115d08dc7 SHA-1: 8c8e53998a09d2b8c27cea55f5ff378a5cf9dd42 SHA-256: 1ef0673a29529673bae49f46b7567e4cecb9cf08eadcb6555eb6d364cb170ecc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for a washing machine manual. This indicates a social engineering lure to direct users to malicious content. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

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=whirlpool+cabrio+top+load+washer+manual
- https://static.usrfiles.com/ugd/b8c837_ed65bc8767a9478181d30ce0d073edcc.pdf
- https://static.usrfiles.com/ugd/b8c837_a869920c2be9433d96f3d89cfd14d061.pdf
- https://static.usrfiles.com/ugd/b8c837_e1f893424f6f45a6bf6d60411436a869.pdf
- https://static.usrfiles.com/ugd/b8c837_1b2801f4ef954e06afde1a49b0f6e3d3.pdf
- https://static.usrfiles.com/ugd/b8c837_b9dcbb7440464f94805d8184ef6f772f.pdf
- https://cdn.shopify.com/s/files/1/0431/1921/4756/files/mifaxitubagabupugef.pdf
- https://cdn.shopify.com/s/files/1/0433/7539/4977/files/foxfi_full_version.pdf
- https://cdn.shopify.com/s/files/1/0447/9765/7248/files/spectrum_dns_servers.pdf
- https://static.usrfiles.com/ugd/b8c837_17533c3230964082bba0a1d4f4ede558.pdf
- https://static.usrfiles.com/ugd/accd1f_238fe2c795e64b48baa5d4ff625dc7e9.pdf
- https://static.usrfiles.com/ugd/b8c837_cad9da7fa409402b9399a38ecaa6359b.pdf
- https://static.usrfiles.com/ugd/b8c837_07f1833272384d079acb5395a7a114ed.pdf
- https://static.usrfiles.com/ugd/b8c837_a2298079133140999817f0eb7840f75a.pdf
- https://static.usrfiles.com/ugd/b8c837_8e7c60119e7a47c4bb0677d44fedcb88.pdf
- https://static.usrfiles.com/ugd/b8c837_44b0347737ab4394b3e02defa38c2303.pdf
- https://static.usrfiles.com/ugd/b8c837_448ec3f79e474b6ca43ac27f3f374d1f.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_off000065b7.bin` `a3c9789530f04829ac7ff7764b0e14cfa08a55df91d7f6b4853b9b6cae448942`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B7	5556 bytes
`font_01_sfnt_off0000787d.bin` `6b0e35eefd39d77f2d7ef55d8fe30d7eda55841fdfc9e9e50ea4ec024903addc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x787D	10192 bytes

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