MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a known malicious redirector, 'https://cctraff.ru/strik?utm_term=corpo+do+trabalho', which is likely used to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to 'Corpo do trabalho' (work body/organization).
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 4
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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/strik?utm_term=corpo+do+trabalho In PDF document text
- https://garagagu.weebly.com/uploads/1/3/4/3/134364865/dileresurirevop.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413846/normal_5f9a38447021a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384318/normal_5f908fda012d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446645/normal_5fbd041f7dc9a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473642/normal_5fa77a907f024.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/f442a206-8838-402f-8ca4-b6d271cfb83c/21717673027.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ca97d04a-b2aa-4b51-824d-7a500bf80fda/81420011928.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4c224673-d804-4306-b5fe-09555525c510/27084607508.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bbb31289-f718-427f-8930-43f2227dfcd8/the_mom_test_audiobook.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c1d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1D9 | 4916 bytes |
SHA-256: 3e37b15f3ec70623bd6a2035dcd77d11053ebf8d98380195e9a5a9544c32ed95 |
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font_01_sfnt_off0000d27c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD27C | 12512 bytes |
SHA-256: 9bfe18171728851d0d9dff1aaaabe6f54f5f08a361b1b67ff136804b9b530fd9 |
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