PDF malware analysis — malicious · 1e05c282d543d038

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 15:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02961ad56413760de62be2002bb4b669 SHA-1: ec17e8694524155ba319f81eaf953f78afd4a69e SHA-256: 1e05c282d543d0388825519d72c14c663343f0f81f38eb626bccda6f6c80596c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This indicates a link farm or SEO poisoning attack, likely intended to lure users to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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=writing+with+skill+level+1
- https://static.usrfiles.com/ugd/b8c837_c882a1daaa0040a3a135eded686fe671.pdf
- https://static.usrfiles.com/ugd/b8c837_8bda8bdaa3984470a4fde9f2de22f781.pdf
- https://static.usrfiles.com/ugd/b8c837_1e3aef501f524f8a80b9ce4504d806b5.pdf
- https://static.usrfiles.com/ugd/b8c837_49aec9fce2f141f186f63bb2d1b46d0f.pdf
- https://static.usrfiles.com/ugd/b8c837_378f41b42f414a37bd4cc1379b8527a7.pdf
- https://cdn.shopify.com/s/files/1/0437/8791/1319/files/2142148574.pdf
- https://cdn.shopify.com/s/files/1/0437/6307/3181/files/formalits_greffe_cession_de_parts_sci.pdf
- https://cdn.shopify.com/s/files/1/0436/0772/0094/files/judiropigetopuvejisin.pdf
- https://cdn.shopify.com/s/files/1/0432/8649/5396/files/lekavesafubu.pdf
- https://cdn.shopify.com/s/files/1/0428/9724/4316/files/ubuntu_16._04_repository.pdf
- https://static.usrfiles.com/ugd/b8bbd7_2445e1d5b2d149cdaacaf9e490e074c0.pdf
- https://static.usrfiles.com/ugd/b8c837_d7e4032911c447a1b1c289acb84cc05b.pdf
- https://static.usrfiles.com/ugd/b77b08_66a7326400f5426db8ad2c5a7d24b80b.pdf
- https://static.usrfiles.com/ugd/b8c837_e8ade5e9a72a46d2a013f43be6f77b37.pdf
- https://static.usrfiles.com/ugd/2e79a6_cf86ca49f53541588b1e378cf4017b95.pdf
- https://static.usrfiles.com/ugd/b8c837_86773f71f9834cca8f6697a234a46b54.pdf
- https://static.usrfiles.com/ugd/b8c837_3a63028323c847d08fe0f16678de305c.pdf
- https://static.usrfiles.com/ugd/b8c837_c808b6b09c1e45648afa93b61cb4a8ea.pdf
- https://static.usrfiles.com/ugd/09273f_31b05ef1bf94473882c44a7356cf6a9f.pdf
- https://static.usrfiles.com/ugd/b8c837_38420233c3a5435da5df18a98cd7b2f0.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_off00006d54.bin` `215d5d42caddcff34e7fff38c28eb2f6c5fd1cca298f5dec5d6bc7be4c3f5e19`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D54	5016 bytes
`font_01_sfnt_off00007e89.bin` `1895794464b78d0ec775ed51f6a6230d666194e057179fe4db75d139178fe5db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E89	10212 bytes

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