PDF malware analysis — malicious · d91eb2a798b7b93c

MALICIOUS

PDF

43.0 KB Created: 2020-09-02 15:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 97b36a165acba420ecc077967ebcbc51 SHA-1: c5a52bd0910ea938144d4e20fbee5eaf2065cc3e SHA-256: d91eb2a798b7b93cb25e0d0428c107ebfdb6fcb33e9abcb30bf2359d5dc355bc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users. The primary redirector URL is https://ttraff.ru/wix?keyword=adobe+audition+3.+0+free++windows+7, which is flagged as malicious. The document body appears to be corrupted or heavily encoded, but the presence of numerous links, including the malicious redirector, strongly suggests a social engineering attack aimed at luring users to potentially harmful 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.ru/wix?keyword=adobe+audition+3.+0+free++windows+7
- https://static.usrfiles.com/ugd/4c3d6a_d12ab11668b449bc91330f65ef33443b.pdf
- https://static.usrfiles.com/ugd/361045_4ff479fee0694988936e9123b93fe857.pdf
- https://static.usrfiles.com/ugd/0dd040_23ea9dba74e9441db6f25f3ebe1bdb4a.pdf
- https://static.usrfiles.com/ugd/e33828_604f6dc64af944d49cfa0b6590695498.pdf
- https://static.usrfiles.com/ugd/ca300b_a6b3a7b450624eb79665a4b6a129b577.pdf
- https://cdn.shopify.com/s/files/1/0434/7602/5501/files/16650526981.pdf
- https://cdn.shopify.com/s/files/1/0436/0998/1085/files/mar_negro_bernardo_esquinca.pdf
- https://cdn.shopify.com/s/files/1/0433/3027/3434/files/verbo_sum_latino.pdf
- https://static.usrfiles.com/ugd/a6e5e9_5d9cb608655c47009a5f3b4ee81b1be4.pdf
- https://static.usrfiles.com/ugd/b8c837_c56c23667a3c4f32b15b664030b16ee7.pdf
- https://static.usrfiles.com/ugd/b8c837_74a5ce99115d458bb9fffb5bc40a766f.pdf
- https://static.usrfiles.com/ugd/f59309_f0f91796de494ff2972e6e69d5ebd337.pdf
- https://cdn.shopify.com/s/files/1/0429/5920/8604/files/86981688612.pdf
- https://cdn.shopify.com/s/files/1/0431/3363/2661/files/prysmian_group_annual_report_2018.pdf
- https://cdn.shopify.com/s/files/1/0431/4431/5029/files/dudakafojuwokaxolazetesop.pdf
- https://cdn.shopify.com/s/files/1/0436/4474/7929/files/dr_ampoule_dual_mask_sheet.pdf
- https://cdn.shopify.com/s/files/1/0437/2014/7095/files/building_construction_management_system.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_off0000690b.bin` `9bd868ed9395efccedde76abca0bd56118f854d2f7cee51a5d6655d1c229efdb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x690B	5508 bytes
`font_01_sfnt_off00007bf7.bin` `a96b3281c40893e9d4dcd2427548ba251b0f1ac14db0127d2cb27568c8c5a283`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BF7	10152 bytes

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