PDF malware analysis — malicious · ccca3b0e3c0fedbe

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 17:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 03265360d0f3be88baeaa654dbb0dd49 SHA-1: ecd0fc2f3811da63a6b6e6f08e3d3df1a877832f SHA-256: ccca3b0e3c0fedbedda320f96b96d975f2db131fd8ffc75a2fc7e59d1bfbb65d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=breath+control+exercises+for+singers+pdf, is designed to redirect users. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking Shopify URLs, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=breath+control+exercises+for+singers+pdf
- http://files.shelbysilver.com/uploads/1/3/0/7/130738559/3b5af2362c.pdf
- http://files.drlindseybeavenmft.com/uploads/1/3/2/7/132712050/1891998.pdf
- http://files.industrialloss.com/uploads/1/3/1/3/131380045/gotigonube.pdf
- https://cdn.shopify.com/s/files/1/0437/9839/7085/files/xifumisirikar.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
- https://cdn.shopify.com/s/files/1/0433/4836/1375/files/mesanusatu.pdf
- https://cdn.shopify.com/s/files/1/0441/0785/8072/files/8664869146.pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1560/files/lipuvuwa.pdf
- https://cdn.shopify.com/s/files/1/0432/5851/1510/files/2nd_grade_addition_and_subtraction_word_problems.pdf
- https://cdn.shopify.com/s/files/1/0431/2779/9969/files/27462376231.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemisavixazesunomezixe.pdf
- https://cdn.shopify.com/s/files/1/0428/7689/5398/files/61214255227.pdf
- https://cdn.shopify.com/s/files/1/0433/0065/1158/files/anamika_academy_jaher_vahivat_download.pdf
- https://cdn.shopify.com/s/files/1/0435/6997/1363/files/75207404283.pdf
- https://cdn.shopify.com/s/files/1/0428/3056/1436/files/xutatobenefekof.pdf
- https://cdn.shopify.com/s/files/1/0436/8737/9094/files/html_random_image_on_refresh.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_off00007494.bin` `cfdca90e0bfb3c8a7bed80e792091af798aed50d5bc40ee91c7f1b182bcb40d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7494	5532 bytes
`font_01_sfnt_off00008764.bin` `2ef7092c3607f8b9a9cbb27635b8cdf5fc2e95b5601688467f60ab968466dfee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8764	10088 bytes

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