MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The primary attack pattern involves directing users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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://ttraff.cc/wb?keyword=rephrasing%20modal%20verbs%20exercises%20pdf In PDF document text
- http://files.sjuartdesign.com/uploads/1/3/1/6/131606087/wulixakitanajukaf.pdfIn PDF document text
- http://files.happypathmeadows.com/uploads/1/3/1/0/131069887/6a3b13d4415.pdfIn PDF document text
- http://files.culturalenquiry.co.uk/uploads/1/3/1/3/131384735/8b11ccb1bc.pdfIn PDF document text
- http://files.lbjixxerstudio.com/uploads/1/3/0/8/130874352/buder.pdfIn PDF document text
- http://files.deepjyotibiswas.com/uploads/1/3/1/4/131437037/wuvagadunemife.pdfIn PDF document text
- http://files.kdhodges.com/uploads/1/3/2/7/132740321/5360778.pdfIn PDF document text
- http://files.historiapopuli.com/uploads/1/3/2/3/132302910/roresi_sanijawi.pdfIn PDF document text
- http://files.cc-sd.net/uploads/1/3/0/7/130739488/1019519.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://popuxokogoju.files.wordpress.com/2020/06/62519479397.pdfIn PDF document text
- https://jagawerabuvi.files.wordpress.com/2020/06/tawamadidoguzulikap.pdfIn PDF document text
- https://jigatize.files.wordpress.com/2020/06/41967475159.pdfIn PDF document text
- https://zopoluwo.files.wordpress.com/2020/07/4227361492.pdfIn PDF document text
- https://mexutux727649879.files.wordpress.com/2020/07/guzaja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9672/7962/files/mudugisogiridinumawujot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18983443830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9309/8660/files/bazeniwalege.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0126/6851/files/93003965477.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0600/8216/files/wegutefebasowofelawune.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7901/6360/files/70334366835.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1926/3397/files/funowobuteb.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_off000061fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61FB | 5552 bytes |
SHA-256: 2894105bc6fb523c75ea56d04eca3ef778a8282863c3c26bb2dca7d44345dfc3 |
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font_01_sfnt_off000074ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74AC | 9620 bytes |
SHA-256: beb52bbf1c2503db3e06305db52037e320cdb1a299a2e1466aaa595765b703c2 |
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