MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a machine learning model indicating high maliciousness. The embedded URL `https://dafemum.ru/strik?utm_term=advanced+engineering+mathematics+solution+manual+8th+edition` is identified as a known malicious redirector. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its specific lure, but the presence of malicious links strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://dafemum.ru/strik?utm_term=advanced+engineering+mathematics+solution+manual+8th+edition In PDF document text
- https://static.s123-cdn-static.com/uploads/4369920/normal_5ff0ca85c94b4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374376/normal_5fef192bf3fee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421782/normal_602a394b15cf5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369191/normal_5fe470dbc91d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480149/normal_5fdbd8efc4743.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/2678a650-f296-4cd5-9e16-6a08d56f7e00/top_business_analytics_courses_in_usa.pdfIn PDF document text
- https://s3.amazonaws.com/muvarelo/gufurexivivirejanukare.pdfIn PDF document text
- https://s3.amazonaws.com/sajatofubote/7_step_problem_solving_process.pdfIn PDF document text
- http://kaderuzaxaje.rf.gd/tajabuvitutokanudiv.pdfIn PDF document text
- https://s3.amazonaws.com/fatikonavori/adidas_performance_asweerun_shoes_review.pdfIn PDF document text
- https://s3.amazonaws.com/sazomo/40037300424.pdfIn PDF document text
- https://99d0733d-4d0e-4d19-b238-fea6f81017ca.filesusr.com/ugd/e32e4a_ef5c5985d5d543dda54be108add31677.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nosepevozux/firefox_version_48_64_bit.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8a0212d9-7088-4ef7-9d8c-ef20aa05b778/69004220531.pdfIn PDF document text
- https://76c87692-cca9-4651-be8e-de6412dad411.filesusr.com/ugd/fdad67_e89725cced2e4438aeee29709973a428.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/be6540f8-6aed-4c54-a8c9-7f9d85306b84/broan_stainless_steel_range_hood_30_inch.pdfIn PDF document text
- https://5e1449e8-5ae4-4a15-bc7a-ee23795bc964.filesusr.com/ugd/3a34a5_44782d1f809b4da2be26470a2244408e.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wajufifenoxuj/epson_wf_2530_printer_error_message.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/904446fe-5fff-4250-a4a2-e3ffa4d57f6e/pete_the_cat_first_thanksgiving.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b91df3f0-07a6-4654-a626-18208ec65a56/kasovetadilajep.pdfIn PDF document text
- http://kikodanaso.epizy.com/pakuwonejutogi.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_off0000da34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA34 | 5596 bytes |
SHA-256: 86e196e1c5a50c7605db8606ba70778c6ed8b1baee65ad65e0a231a7dbfc4ea3 |
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font_01_sfnt_off0000ed13.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED13 | 10340 bytes |
SHA-256: 9d207a7b5bdc4b8ef6893a674c3cb8e065f075bc5fa1be48c73138e003071bf4 |
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