MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded links, many of which point to other PDFs hosted on various domains, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly support the malicious nature of this file.
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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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://cctraff.ru/aws?utm_term=n+a+b+h+ka+full+form In PDF document text
- https://cdn-cms.f-static.net/uploads/4464527/normal_5fda48dd4cec4.pdfIn PDF document text
- https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/28876398190ff1.pdfIn PDF document text
- https://patodenum.weebly.com/uploads/1/3/4/6/134657208/domudofumuw_bosojev.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477873/normal_5fc0870aa727b.pdfIn PDF document text
- https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/4750152.pdfIn PDF document text
- https://wanuvimuz.weebly.com/uploads/1/3/4/4/134462356/6d4617df7354679.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466366/normal_5fa309015b487.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369671/normal_5f88d25ab8d6b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427498/normal_5fcbb7eb0ca1e.pdfIn PDF document text
- https://xukoxaxap.weebly.com/uploads/1/3/4/7/134748194/rixis.pdfIn PDF document text
- https://mebitulipavore.weebly.com/uploads/1/3/4/3/134339985/edcd0.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/d9b642b1-40fc-4b49-b363-21fa2543ad1d/pejabopibeponazudemepexob.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2e6f2ff9-b601-428b-a562-8bd83a289d79/giragumodofogujagoxomeme.pdfIn PDF document text
- https://static1.squarespace.com/static/5fdc79c85e71df64d6bd9c29/t/5fdc7b664ef20e41a29c34ef/1608285030681/pemupapojutuwenalos.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc7904a778af068263f36d1/t/5fcbffc4c836a917f9f77e9c/1607204805967/scary_camera_prank.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/54e6aeea-147b-4e02-bbb0-51165f25268e/dupavogaperodujemifu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4038c94c-672c-466a-9aa1-f577c41d72b3/run_3_swf.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_off0000c586.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC586 | 5004 bytes |
SHA-256: 867b0e3795bc1d296efd59caa73bc357e6677bc692ebf39e5d4c1589c60488eb |
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font_01_sfnt_off0000d664.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD664 | 10100 bytes |
SHA-256: b3ba1e944f8cf4dfb353c1baea48d8c4101b2bbed1f66999ceb186979fdc4c2d |
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