MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?keyword=thermochemistry+worksheet+pdf'. ML classification and ClamAV also flagged this file as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or malware delivery, which aligns with the Spearphishing Attachment technique.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 4
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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/123?keyword=thermochemistry+worksheet+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4372384/normal_5f957c7053e8b.pdfIn PDF document text
- https://melubezu.weebly.com/uploads/1/3/4/3/134311229/90f2d3c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393020/normal_5fa872495f075.pdfIn PDF document text
- https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/301939.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418558/normal_5f9a301f71e42.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366045/normal_5f87447a27a49.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375705/normal_5f8bc83da06c3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gaxuremewuger/rilibezugemoluku.pdfIn PDF document text
- https://s3.amazonaws.com/gezetega/cheaper_by_the_dozen_book_sequel.pdfIn PDF document text
- https://s3.amazonaws.com/zowejunef/giancoli_answers.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/lamparas_solares_para_alumbrado_publico.pdfIn PDF document text
- https://s3.amazonaws.com/kigavanus/45280259514.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_off0000e5d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5D2 | 5360 bytes |
SHA-256: 4f5d5ca4fd1e5fd07cb5843137ed260ed0ce7dfbaca5c6643540ad04afab67fd |
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font_01_sfnt_off0000f7ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7FF | 11596 bytes |
SHA-256: 9f5dd09ae298d9a27e573bbc4d9f3ad23bbc03a26a105ee0e3eb43d138f749ab |
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