PDF malware analysis — malicious · bb363b795f106297

MALICIOUS

PDF

34.7 KB Created: 2020-11-08 01:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 680bfca682a5a4b5e0cc793970738ced SHA-1: 128f7065b001bdad222274b4758d05d558342f67 SHA-256: bb363b795f1062975171c45c644ee7a286d44bab0552611faffe13795ee2e38a

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/aws?keyword=adjective+of+number+sentences, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of PDF redirects often involves embedded JavaScript to facilitate the redirection, hence the inclusion of T1059.007.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 2

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.
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://cctraff.ru/aws?keyword=adjective+of+number+sentences
- https://cdn-cms.f-static.net/uploads/4393026/normal_5fa582ce82692.pdf
- https://cdn-cms.f-static.net/uploads/4376866/normal_5f89b94734988.pdf
- https://cdn-cms.f-static.net/uploads/4404502/normal_5f957083c5da2.pdf
- https://cdn-cms.f-static.net/uploads/4417535/normal_5f9a58ac66ce8.pdf
- https://cdn-cms.f-static.net/uploads/4377371/normal_5f8eee3e32d77.pdf
- https://cdn-cms.f-static.net/uploads/4373778/normal_5f94134b68cc9.pdf
- https://cdn-cms.f-static.net/uploads/4394066/normal_5fa69449d0293.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://nelijonex.files.wordpress.com/2020/11/livugegonuxemi.pdf
- https://uploads.strikinglycdn.com/files/07937ddc-8526-48a8-ab9a-351169a987ba/digumekujatapugef.pdf
- https://uploads.strikinglycdn.com/files/4a010ba2-0d21-465a-85a0-c8138cdbf12a/starting_with_raspberry_pi.pdf
- https://s3.amazonaws.com/nakevoja/37279710271.pdf
- https://s3.amazonaws.com/suzeduselu/62499000117.pdf
- https://teviwuder.files.wordpress.com/2020/11/74816372793.pdf
- https://uploads.strikinglycdn.com/files/fdd448db-22a2-4369-a5c3-1a1d13db11e8/jamabanotebelepaseputiv.pdf
- https://uploads.strikinglycdn.com/files/b1deee78-a101-4316-82ef-262a9b5d2fd1/gumuzakisuvuwakaka.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000618f.bin` `68284450dba3d7b3926318a4dce5e08f3e0ae03e42b0fa83c8e328b98f495030`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x618F	5188 bytes

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