MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a large number of external links, many pointing to disposable hosting, and one primary URL that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to 'knot tying instructions' to mask the malicious redirection. No scripts were extracted, but the PDF structure and extensive link farm are indicative of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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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External URI info PDF_URIPDF contains an external URL action
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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://leonvi.ru/strik?utm_term=fg+knot+tying+instructions PDF link annotation
- https://reninifovebomul.weebly.com/uploads/1/3/4/3/134361606/9675557.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450630/normal_606042c9231c1.pdfIn PDF document text
- https://fugakesuj.weebly.com/uploads/1/3/0/7/130776648/raramunobeg-lotimaraga-lakulidu-lisizu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484815/normal_600f56d885e22.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474979/normal_603332e42f596.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393625/normal_602de602a5fd0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383574/normal_5fd79e2616d01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426551/normal_601e6452b6e0d.pdfIn PDF document text
- https://xexifenenufomag.weebly.com/uploads/1/3/6/0/136082553/dugapab_mavilakineka.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419192/normal_5fd628ec6b42c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412763/normal_6049c5617eff6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370762/normal_603ac1915749e.pdfIn PDF document text
- https://rinumobepora.weebly.com/uploads/1/3/4/3/134377952/4132477.pdfIn PDF document text
- https://lazidejapagopi.weebly.com/uploads/1/3/4/8/134891766/wuwino_zavugujimike_sowararosivitov_nixidilobu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470828/normal_603078ec29531.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/8b71a47d-1e00-4848-ae74-ad5592539f9d/bites.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/933b1705-d286-4015-9777-f1dc8f332e6b/7511379660.pdfIn PDF document text
- https://d0aee4dd-c5bf-4c29-adcf-3aa844f59ef3.filesusr.com/ugd/193d13_8fa1c37edcf946f1adb8d1f9ad1bfe8e.pdf?index=trueIn PDF document text
- https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_352d196ddae4450c8ea918cd2c860eab.pdf?index=trueIn 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_off0000e931.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE931 | 4848 bytes |
SHA-256: 7ffacc543a4a2ab93727f3a237c173d93b29f9cc2ae77d2e7ba2a3be8421e3d2 |
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font_01_sfnt_off0000f9db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9DB | 10724 bytes |
SHA-256: d97e7e1be6875a89ad6b554771ee893485cc4948a01b2bb206c9d1b1b53d18c1 |
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