PDF malware analysis — malicious · bc5cd7f7b7f217b1

MALICIOUS

PDF

34.7 KB Created: 2020-11-01 05:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 256af8720092d00b4676e3254f5002f2 SHA-1: f05a75e375f7d55ad1a5b5a935e2f16b4d45db03 SHA-256: bc5cd7f7b7f217b19f82d93ecb5296f7a93c1e487a2202b45527a4b83001a5b0

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=scaling+worksheet+pdf, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains this URL, suggesting its purpose is to lure the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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=scaling+worksheet+pdf
- https://cdn-cms.f-static.net/uploads/4385631/normal_5f8e23ba8e160.pdf
- https://cdn-cms.f-static.net/uploads/4367952/normal_5f969deb0fa4b.pdf
- https://tunupufimudodo.weebly.com/uploads/1/3/4/3/134324073/359f6fddf52b.pdf
- https://rigitugatelimo.weebly.com/uploads/1/3/4/1/134131632/3726345.pdf
- https://togurekeve.weebly.com/uploads/1/3/4/0/134040335/ridosubupasusole.pdf
- https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/6619d392871488.pdf
- https://mimoberojatef.weebly.com/uploads/1/3/4/3/134316463/2782123.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/d8124769-0eb7-4391-bb3f-851b56d18aea/sojiraba.pdf
- https://s3.amazonaws.com/xukonakefules/dipevavosimaninunawiwafi.pdf
- https://uploads.strikinglycdn.com/files/e31ec80d-3dee-4d15-9a48-206796f6cda9/gamazajijulogeduz.pdf
- https://uploads.strikinglycdn.com/files/f4957f4a-bbae-4e3c-be3a-073d74d2c24c/dazodigexumuratotadamavet.pdf
- https://s3.amazonaws.com/sezebepit/66122247610.pdf
- https://s3.amazonaws.com/vibuvomomuv/30_day_vegetarian_ketogenic_diet_plan_free.pdf
- https://s3.amazonaws.com/wajibile/temofuxuxinovufilus.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ae8.bin` `beef69ca6b891c74367b721588b16170976054eca87767455be994b3aab98237`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AE8	5676 bytes

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