PDF malware analysis — malicious · e489f85853049ec2

MALICIOUS

PDF

45.4 KB Created: 2020-09-03 00:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04bcc8f90bfed55907ab5219c71d58b2 SHA-1: de2db349904e328688fe5133f995bffd8ed522d9 SHA-256: e489f85853049ec29dea3782ae1ff408af330021852df9f10a27168f4ba0d0dc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to 'manualidades con botellas plasticas para jardin'.

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=manualidades+con+botellas+plasticas+para+jardin
- https://cdn.shopify.com/s/files/1/0432/0729/5140/files/cyclothymia_test.pdf
- https://cdn.shopify.com/s/files/1/0432/9085/3534/files/ansi_ashrae_ashe_standard_170.pdf
- https://cdn.shopify.com/s/files/1/0434/5180/9959/files/kamanepi.pdf
- https://cdn.shopify.com/s/files/1/0434/9889/7574/files/agroecologia_concepto.pdf
- https://static.usrfiles.com/ugd/1d64af_165735b2695e4cb29e70f07e36c482ae.pdf
- https://static.usrfiles.com/ugd/fafc38_d93e1e1958dd465e893e862962831725.pdf
- https://static.usrfiles.com/ugd/278743_db51e7238fb646d8a7e15f7d61f0509e.pdf
- https://static.usrfiles.com/ugd/2ac701_063e5c5ddd0a4a9a89de7645644c6aa4.pdf
- https://static.usrfiles.com/ugd/45fd81_ebf61929fe5f4470aff34dbc3df7b983.pdf
- https://static.usrfiles.com/ugd/d017d5_ab3b164a87214fde9b40df81d7509c53.pdf
- https://static.usrfiles.com/ugd/e481ce_7ff0b246fecd4a1aa16131458dcf00d2.pdf
- https://static.usrfiles.com/ugd/60933b_7539e3583d3249fbb8bf7c05cb10acf9.pdf
- https://static.usrfiles.com/ugd/8a05ec_838a8644a4084a709a258a345ab100f8.pdf
- https://cdn.shopify.com/s/files/1/0437/6897/1415/files/ttuhsc_media_hub.pdf
- https://cdn.shopify.com/s/files/1/0432/8734/7360/files/roserizivevobidi.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_off000068cb.bin` `fbe3fdecb2506346884eeb5707d31924a0a29d67948753ebb38392f10ebae639`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68CB	5288 bytes
`font_01_sfnt_off00007ad6.bin` `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AD6	1800 bytes
`font_02_sfnt_off00008363.bin` `85731b82ea32cc08f4a63122141935577574cbe683de7a68bd429cccf170efed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8363	10724 bytes

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