MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://midufefew.ru/strik?utm_term=kaiser+medical+records+release+form+california+fax+number PDF link annotation
- https://cdn-cms.f-static.net/uploads/4460981/normal_60129896b56e2.pdfIn PDF document text
- https://dapiridefurewej.weebly.com/uploads/1/3/5/9/135987432/5532095.pdfIn PDF document text
- https://tavadarikozo.weebly.com/uploads/1/3/5/9/135987174/titodofinu-vufefiroku-gemasumelilexe-furisuxakowenu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392873/normal_5fed154483cd2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368501/normal_6041c65e4e1aa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501385/normal_606246fba2d20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385422/normal_60507aed13b0a.pdfIn PDF document text
- https://watogovujun.weebly.com/uploads/1/3/4/6/134626060/8171633.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501963/normal_5fd3992b5b2c2.pdfIn PDF document text
- https://pazolumaf.weebly.com/uploads/1/3/4/3/134356568/37a9b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373757/normal_6054936133be7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459481/normal_5feb01cccb4af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412377/normal_604cd6376f616.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416150/normal_6050253ab2fb5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458124/normal_60604313779b5.pdfIn PDF document text
- https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/3706119.pdfIn PDF document text
- https://jibizixowaxen.weebly.com/uploads/1/3/5/2/135296653/ab4ae0db.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454822/normal_601536b4cd930.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465262/normal_5ff9fd0a614fd.pdfIn PDF document text
- https://nozesebekujizaj.weebly.com/uploads/1/3/4/6/134698307/2e5edda73a.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/lekizopiloref/54769260903.pdfIn PDF document text
- https://s3.amazonaws.com/goneduzum/mojenikowokonubav.pdfIn PDF document text
- https://s3.amazonaws.com/pulavokaxe/7232785273.pdfIn PDF document text
- https://s3.amazonaws.com/bulalowisu/59265130616.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_off000119bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119BF | 5344 bytes |
SHA-256: 09d182884eddc3d42548a2e2c67a1948a85af815ba1cc4fd28a90f437e3f941a |
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font_01_sfnt_off00012bdb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BDB | 11776 bytes |
SHA-256: 0f41da1b28b77dd9b0bcb7aec40816f1dc416253e08d1416a7f512f73d681871 |
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