PDF malware analysis — malicious · 3586e385c2e709ff

MALICIOUS

PDF

62.0 KB Created: 2020-08-30 11:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04c9e991b2ceb0f93fe180443ba082be SHA-1: c76fdd85c0934a539acfe2b2cf9842af221e4a92 SHA-256: 3586e385c2e709ff598bb09d8bfaed592af8fa9661d6f7444693a317d2710751

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.ru, which is likely used to funnel users to further malicious content. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, consistent with a link farm strategy.

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=estimating+and+costing+in+civil+engi
- https://cdn.shopify.com/s/files/1/0436/6788/2134/files/qradar_siem_datasheet.pdf
- https://cdn.shopify.com/s/files/1/0431/5811/0363/files/87134677558.pdf
- https://cdn.shopify.com/s/files/1/0430/6193/6282/files/kokaxikezemozivuza.pdf
- https://static.usrfiles.com/ugd/b8c837_0a67378e40734cebb1d843fe32f004a3.pdf
- https://static.usrfiles.com/ugd/b8c837_6e47c7c7d1a6442d8ebdcdc9369fa4d1.pdf
- https://static.usrfiles.com/ugd/b8c837_b5e8d0f10240461e9b98d1a2b99c762d.pdf
- https://static.usrfiles.com/ugd/a76634_fad08a28eac4476983aa9bd1ec544374.pdf
- https://static.usrfiles.com/ugd/b8c837_4dae6cf70624488d80d3fba796d71520.pdf
- https://static.usrfiles.com/ugd/b8c837_9f13fae499f047edbe01084afffde4bb.pdf
- https://static.usrfiles.com/ugd/493135_4224fd796bff4bcabfbff3f124c88cd0.pdf
- https://static.usrfiles.com/ugd/f0e51d_c18eb523af2f4911b368f842c0b695e6.pdf
- https://static.usrfiles.com/ugd/b8c837_6ca6542135bd4338936826dc674c0e5c.pdf
- https://static.usrfiles.com/ugd/b8c837_96711c4ee1d3412d9f57b6d255b93abe.pdf
- https://static.usrfiles.com/ugd/b8c837_b224d8e76dea45cda904ec41700dd946.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_006_off0000cab7.bin` `0260fe10ec4a605adc8aa78bea758fb092ac3971c9a643c6408fa41dda8acbef`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xCAB7	19684 bytes
`font_00_sfnt_off00008a37.bin` `b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A37	2828 bytes
`font_01_sfnt_off00009432.bin` `f546e1b3a7d02bf545cb64ae7c3e0a36ff9242973f0b43d21bdcf94d54f2513a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9432	5180 bytes
`font_02_sfnt_off0000a5c4.bin` `943571cd54d026aa180884a6e961412cd7720906d13b414c925e2991bf0d4abb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA5C4	10828 bytes

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