MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to domains associated with link farms or compromised CMS uploads, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation of PDF vulnerabilities to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://krisoc.ru/uplcv?utm_term=more+synonyms+starting+with+p PDF link annotation
- http://basyapiemlak.com/yukleme_klasoru/userfiles/file/tunipovebel.pdfIn PDF document text
- http://faizleathergloves.com/userfiles/files/sudavikukas.pdfIn PDF document text
- https://kompaspt2.com/contents/files/56463599202.pdfIn PDF document text
- https://mimpisiluman.com/contents/files/12857963693.pdfIn PDF document text
- https://hnhaa.com/userfiles/tnejp/files/luzevoxixit.pdfIn PDF document text
- http://revucue.com/ckfinder/userfiles/files/mojoguju.pdfIn PDF document text
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/7e155637f1cd13e4baa4bc22a5737077/fugiserowumibavez.pdfIn PDF document text
- http://coolbiotech.com/upload/files/1463521311.pdfIn PDF document text
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed7ad25890---57460478266.pdfIn PDF document text
- https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16135cef0eedce---sironavunoro.pdfIn PDF document text
- https://marlin-aquarium.ru/ckfinder/userfiles/files/4216765004.pdfIn PDF document text
- http://xn--80aer5aza.xn--c1acndkmcarx.xn--p1ai/ckfinder/userfiles/files/73617915446.pdfIn PDF document text
- http://simsvizag.com/contentimages/file/tunivikirage.pdfIn PDF document text
- http://sunnysolutions.it/uploads/assets/file/mifakewapuwonojikumu.pdfIn PDF document text
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16130ab64d75c4---25778861156.pdfIn PDF document text
- http://newtarrytowndeli.com/uploads/files/65259463807.pdfIn PDF document text
- http://www.farmaciabergua.com/userfiles/files/zidemipesadofasavekibe.pdfIn PDF document text
- http://jtipartner.com/ckfinder/userfiles/files/gapavuboroxegaj.pdfIn PDF document text
- http://xn--76-6kca8aqc6c.xn--p1ai/pic/userfile/13668843456.pdfIn PDF document text
- https://inprovitcolombia.com/ckfinder/userfiles/files/94673005859.pdfIn PDF document text
- https://deycaterers.com/ckfinder/userfiles/files/93485368908.pdfIn PDF document text
- http://everest-c.ru/ckfinder/userfiles/files/31195257966.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d59d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD59D | 10844 bytes |
SHA-256: c26a6fd005f2e958b12c3fd21a60c21c0ad81b0ac2e3d47f2dc84b8aaa65890d |
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font_01_sfnt_off0000ee9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE9C | 18648 bytes |
SHA-256: 5353e987851cb65b45baa9fa5c1e6ac56ba8f9b2cb9609bd1fd0108a19fd8c57 |
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font_02_sfnt_off00011ede.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EDE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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