MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains numerous external links, many pointing to SEO-optimized PDF files, suggesting a link farm or phishing campaign. The primary URL, 'https://ponafet.ru/123?utm_term=bing+ad+certification+answers', is identified as a redirector likely used for phishing or malware delivery. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or trojanized document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://ponafet.ru/123?utm_term=bing+ad+certification+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4485457/normal_6034183caea85.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421477/normal_6001e6e335be2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4462350/normal_5fd8554200e0b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390381/normal_6027c643d930f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404750/normal_604b337d3476c.pdfIn PDF document text
- https://s3.amazonaws.com/gavapozalilup/how_to_prepare_for_gre_test.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379744/normal_5fea225521459.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4493610/normal_5ff7a7347469e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412999/normal_6017b18322d54.pdfIn PDF document text
- https://s3.amazonaws.com/zuguvoxoki/broadsheet_south_melbourne_cafes.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372074/normal_5fea091f59fbe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470982/normal_602bdd8f20b1a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374535/normal_603b414b44e1b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465564/normal_5fd30a0cca067.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389816/normal_6031ba3d48dce.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422144/normal_5ff94941cba8d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4456687/normal_60078ab7a7c80.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_691ea55d3da14ea8910768f1cbfc4d4c.pdf?index=trueIn PDF document text
- https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_1d687ce0511947c9948dac5dffafb08c.pdf?index=trueIn PDF document text
- https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_80d26acfd62e4431a31d2efdd6f638d2.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_off0000c6a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6A6 | 5300 bytes |
SHA-256: aad758b3598a23174fc6d2b7398d9ea329019350edfb52a89becb51ade5ef21b |
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font_01_sfnt_off0000d8d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8D5 | 10380 bytes |
SHA-256: 4f76e569a0b504fa8f667be7df6e8eb90a6c88f56bbfdee694965149e8d83bb1 |
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