MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://crophysi.ru/strik'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://xavaruren.weebly.com/uploads/1/3/1/3/131383751/6fb0433d202.pdf' being a prominent example. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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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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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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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=how+to+write+a+formal+letter+to+your+hod In PDF document text
- https://xavaruren.weebly.com/uploads/1/3/1/3/131383751/6fb0433d202.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374517/normal_60130a7ce9ef8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416514/normal_6040291a17b2b.pdfIn PDF document text
- https://penelusoluko.weebly.com/uploads/1/3/4/6/134699361/8689425.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366382/normal_600e137735553.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366367/normal_5fe319b6ac199.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/napejaxosinages/begev.pdfIn PDF document text
- https://s3.amazonaws.com/poguvelefa/75958048354.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/634aca59-f5f0-4d87-8de0-09538c39ffbd/roku_3810r_walmart.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01b13e44-1c0f-4305-b4e1-5ab47c5d7225/books_written_before_1900.pdfIn PDF document text
- https://s3.amazonaws.com/zesixefe/jolifotimopiw.pdfIn PDF document text
- https://s3.amazonaws.com/xeponodij/how_to_program_remote_chamberlain.pdfIn PDF document text
- https://s3.amazonaws.com/faxaxos/the_lying_game_season_2_trailer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1c72eb5-c814-44d9-866f-9a796953c541/2005_chevy_malibu_ls_v6_review.pdfIn PDF document text
- https://s3.amazonaws.com/mesotodimus/char_broil_performance_2_burner_grill_reviews.pdfIn PDF document text
- https://s3.amazonaws.com/dojivewobasuval/86492009987.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/481876fc-0d8f-485d-9313-3593ebfb01f8/apc_back_ups_es_700_user_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/47d10575-f093-495a-bf1e-bfb640c0f083/lixikuvazu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0a2cedaa-6ec2-46f5-acc2-e469d0edb66c/34979820548.pdfIn PDF document text
- https://s3.amazonaws.com/vosimalume/57412069348.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9091fde4-797c-42b1-87d0-36e0397b03ce/lozewotuzumifiwad.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_off0000e5a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5A7 | 5124 bytes |
SHA-256: 7b5be6de6cb4a0c28a962d32931ef93e7ad46a1f686f29e43aefa7cc242ee20e |
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font_01_sfnt_off0000f6fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6FD | 10364 bytes |
SHA-256: b05e16dc898d80088b28df02adcff05c9c43ed89e3d340108c2ccab8819a7cdc |
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