MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of embedded links, many of which point to redirector infrastructure known for malicious activity. The document body, though obfuscated, suggests a lure related to educational topics, likely to entice users to click on the malicious links. The ML classifier strongly indicates maliciousness, and the presence of redirector links points towards a phishing or content-luring attack.
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.ru/wb?keyword=universalisation%20of%20elementary%20education%20pdf In PDF document text
- http://files.infiniterootsofwisdom.com/uploads/1/3/2/8/132815854/vezozelojoj-kujaw.pdfIn PDF document text
- http://files.votemikeclark.com/uploads/1/3/1/4/131438068/9984358.pdfIn PDF document text
- http://files.kmrandallauthor.com/uploads/1/3/1/1/131164421/a679f10bb.pdfIn PDF document text
- http://files.innerframework.org/uploads/1/3/1/0/131070526/wudifujasiribodiwim.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://rojejimij901227669.files.wordpress.com/2020/06/53451614641.pdfIn PDF document text
- https://kanebiduseme.files.wordpress.com/2020/07/46231677151.pdfIn PDF document text
- https://gunurineso.files.wordpress.com/2020/06/84621849734.pdfIn PDF document text
- https://tuponizozu.files.wordpress.com/2020/06/3196133925.pdfIn PDF document text
- https://bubusajofugi.files.wordpress.com/2020/07/72253157010.pdfIn PDF document text
- https://danadarebu.files.wordpress.com/2020/07/tadupijavawovutetuna.pdfIn PDF document text
- https://jexosatija.files.wordpress.com/2020/06/87762576982.pdfIn PDF document text
- https://kijomevoduno.files.wordpress.com/2020/06/73599224805.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9383/5432/files/38557107684.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1334/0312/files/32360671381.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3260/0985/files/fimajafaxaruf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9479/3630/files/41280243730.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0147/9321/files/22081149179.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0625/4494/files/lujokuto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2778/4099/files/goxowejanarurowepo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4143/2487/files/47242137509.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5680/8607/files/fulizexagadi.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_off00007350.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7350 | 5336 bytes |
SHA-256: db32a3cb59e16dc838c631f41f8c045991f6676dfbbd378e9d0a5e10b3a84348 |
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font_01_sfnt_off00008564.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8564 | 9812 bytes |
SHA-256: 99622ea4531b399edecfa7253803bcf8c32e670d8cf063430f2123b693e929d5 |
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