MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of embedded links, many pointing to disposable hosting or redirectors, suggesting a link farm or SEO spam operation. One critical heuristic indicates a link to known malicious redirector infrastructure, specifically `https://crophysi.ru/strik?utm_term=best+free+mp3+music+converter`. No scripts were extracted, but the PDF structure itself facilitates the distribution of malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 6
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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 contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://crophysi.ru/strik?utm_term=best+free+mp3+music+converter In PDF document text
- https://sidunaxegizu.weebly.com/uploads/1/3/0/7/130776644/datavuvutan.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464521/normal_6004ff558978f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403681/normal_606df4613292e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470960/normal_5ff8f260d7922.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413835/normal_5ffab351ccf21.pdfIn PDF document text
- https://pevamuwewewi.weebly.com/uploads/1/3/4/6/134636281/fovavedol.pdfIn PDF document text
- https://sitimewodojex.weebly.com/uploads/1/3/1/8/131856527/8156676.pdfIn PDF document text
- https://kogewovedof.weebly.com/uploads/1/3/4/3/134339257/9587874.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384640/normal_5fd9a2bcd96be.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479902/normal_602316eb07369.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380857/normal_603fb0f0cdb61.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385424/normal_60349d5d35609.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373753/normal_602905c90e568.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470964/normal_6048e90f3fa66.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4496372/normal_604214cb3828a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495265/normal_600f63ef7ab17.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/04219072-6f28-4520-9b12-463bec581e6c/vejuwam.pdfIn PDF document text
- https://s3.amazonaws.com/toliwudalamem/jiruxutokizora.pdfIn PDF document text
- https://s3.amazonaws.com/gazitif/devaney_s_goat_sheet_music.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd7f8b0d-1c94-47b8-bd8d-1034cba17a37/vizio_m65-c1_main_board.pdfIn PDF document text
- https://s3.amazonaws.com/jolituzoji/dolesoruxesobilutogutikan.pdfIn PDF document text
- https://s3.amazonaws.com/rebesudanolo/vusowaluzoj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ee295403-c36d-4c6e-8122-1fe50127c8e7/tcp_ip_protocol_suite_solution_manual.pdfIn PDF document text
- https://s3.amazonaws.com/figugipopar/resofetu.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_off0000ed80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED80 | 5192 bytes |
SHA-256: c748feaac79d21028c5d9f86f15a73f242e9b6f30c700135d2deeb94f7c6ffe9 |
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font_01_sfnt_off0000ff26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF26 | 10504 bytes |
SHA-256: a87bd953c04b1be8398f0655a99c314ea156851b12c9b3eed1fb2039133d4b78 |
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