MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document contains numerous links, many of which point to algorithmically generated URLs on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document is designed to manipulate search engine results or distribute further malicious content. The presence of a redirector link further supports the malicious intent, likely leading to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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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/mozel?keyword=catalytic+activity+of+enzymes+pdf In PDF document text
- http://waduw.jamesphelan.com.au/uploads/1/3/2/6/132681192/tabav_senazata.pdfIn PDF document text
- http://pujudafoz.shadowhillspresbyterianpreschool.com/uploads/1/3/1/3/131378816/6788505.pdfIn PDF document text
- http://bajib.wichitajoyorganics.com/uploads/1/3/0/8/130814339/mafaxekoz.pdfIn PDF document text
- http://zugugij.thewellwithinus.com/uploads/1/3/1/0/131069934/8bcf48b0af5c32.pdfIn PDF document text
- http://files.dustfreelv.com/uploads/1/3/2/6/132681426/8687166.pdfIn PDF document text
- http://files.ncherbsociety.org/uploads/1/3/2/3/132302759/pufabofek.pdfIn PDF document text
- http://files.grotonh3.com/uploads/1/3/1/6/131606256/wirezexomulexepiwore.pdfIn PDF document text
- http://wiwurur.giselabeckius.com/uploads/1/3/2/7/132712348/8022464.pdfIn PDF document text
- http://dorokake.jetchcreations.com/uploads/1/3/1/4/131409090/vupamifulila-zarobu.pdfIn PDF document text
- http://xepudeb.chenyilei.net/uploads/1/3/1/8/131872295/wulagilinaj.pdfIn PDF document text
- https://site-1037157.mozfiles.com/files/1037157/xavoliwapokozamijumel.pdfIn PDF document text
- https://site-1037113.mozfiles.com/files/1037113/notasenivitudokak.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0011/1002/files/rixebovexowumuwafop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1738/7682/files/securecrt_7._3_portable.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4736/0424/files/11626918613.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/4351/2474/files/discrete_fourier_analysis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8136/6693/files/91736474329.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_off0000658e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x658E | 5324 bytes |
SHA-256: d4ed98d6fed5c505c5f91b2b8b5ceb525ed074f7745093028ca69488232f2342 |
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font_01_sfnt_off000077b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x77B7 | 10356 bytes |
SHA-256: db8fc52a58e0c57c93902ab2d931556e0334275a05a08695899dfbbb89be9f1d |
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