MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, suggests a lure related to 'nom tuberculosis 2019 pdf', likely a pretext to encourage clicks on the embedded links, which are designed to lead users to malicious 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=nom%20tuberculosis%202019%20pdf In PDF document text
- http://files.elsolpto.com/uploads/1/3/2/8/132814050/1695128.pdfIn PDF document text
- http://files.emilioparrilla.com/uploads/1/3/1/4/131453170/8866483.pdfIn PDF document text
- http://files.choicechildcarepreschool.com/uploads/1/3/2/6/132682936/b71bfd.pdfIn PDF document text
- http://files.poseidonplay.com/uploads/1/3/2/3/132302966/4604618.pdfIn PDF document text
- http://files.sharyndunn.com/uploads/1/3/1/1/131164023/5088819.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/1/0434/6265/6157/files/nabobekisetiziju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6965/1606/files/kiwutejisisimazu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2571/0752/files/11101844049.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zavoriduxosijalas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4217/6150/files/ruragoxewebaxo.pdfIn PDF document text
- https://kanomotimela.files.wordpress.com/2020/07/dudadenesazanudekisabamo.pdfIn PDF document text
- https://nefenigagime.files.wordpress.com/2020/07/83442623735.pdfIn PDF document text
- https://pamivibafime.files.wordpress.com/2020/06/32474728075.pdfIn PDF document text
- https://zexivavazi.files.wordpress.com/2020/06/51918111697.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6244/2661/files/56403966153.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0549/9801/files/vujonixivuromifanun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9004/3287/files/75701230171.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4519/1841/files/dikeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9511/3374/files/zazisop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9562/1796/files/xoxanokizetutiti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5450/5885/files/63302817388.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9812/1119/files/suramedo.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_off000073b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73B3 | 5456 bytes |
SHA-256: c720c3957d4f9ba1b75cb9557e8a6dd7b58954b85956e73b2c3491ec1dc96558 |
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font_01_sfnt_off0000864e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x864E | 10148 bytes |
SHA-256: 3bbb4eea8d7d839f46525c510b3cd5f2766eabe7feba30b452a5764d68f4103d |
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