MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a critical heuristic for linking to a known malicious redirector and for containing a mass external PDF link farm. The document body contains the URL that triggered the redirector heuristic, suggesting a lure to external content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct execution capabilities.
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://ttraff.ru/pify?keyword=the+barefoot+investor+pdf+audible In PDF document text
- http://files.kytnpathfinders.org/uploads/1/3/0/7/130775145/5958866.pdfIn PDF document text
- http://files.avinumalkeinumessianicsynagogue.com/uploads/1/3/1/3/131397971/pekurigakosed_zorokifi_givufovazine_begululuba.pdfIn PDF document text
- http://files.ladyteviot.co.uk/uploads/1/3/1/4/131453291/7112315.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/1/0428/7715/7542/files/2186701884.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8071/2346/files/variables_in_qualitative_research.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3164/2780/files/97163071297.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6759/6191/files/totunaxupujopudobir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5678/3772/files/13885089504.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3195/2536/files/internet_explorer_11_for_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8037/5702/files/suvudexotolizuwejusala.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7365/9290/files/2947089790.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4713/2068/files/biogeography_lecture_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6053/5196/files/lewenojirajoxojojexusil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3901/4562/files/sarunupexifupolajoj.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_off00004d2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D2A | 5280 bytes |
SHA-256: 80e3c26fcf499575b9ce7883e581003f23c6b9bab8637364e9c006dd9f8881e5 |
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font_01_sfnt_off00005f18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F18 | 10332 bytes |
SHA-256: be42ca887e681bbf9e2289b6235c3676fdab9ce2a76b59759c8c8a35e77765de |
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