MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though partially corrupted, contains text related to 'advanced discrete mathematics notes pdf' and a URL that matches the malicious redirector. This suggests a social engineering attempt to trick users into visiting a malicious site by disguising it as academic content.
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/pify?keyword=advanced+discrete+mathematics+notes+pdf In PDF document text
- http://files.jasmoseley.com/uploads/1/3/1/3/131384429/gotitefewodek_vabilox_tuxuzaxejoka_pimapili.pdfIn PDF document text
- http://files.fxbrwanda.org/uploads/1/3/0/9/130969809/tubetavowavamoz_ferorilobu.pdfIn PDF document text
- http://rokozad.kimsadesign.com/uploads/1/3/0/7/130739377/8731885.pdfIn PDF document text
- http://wawijerip.npsmusicsound.com/uploads/1/3/1/3/131398109/5b32ca1.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/1/0436/8711/6965/files/karl_marx_conflict_theory_essays.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5865/7430/files/zibolotiruxepij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6035/3429/files/kpop_quiz_2016.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4474/1024/files/finekelimeliw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0476/4068/files/mudoramuxafekomitarititud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7487/0689/files/original_affluent_society.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7939/1646/files/95009731354.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1141/4939/files/4056734447.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8731/2534/files/download_livro_admiravel_mundo_novo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4135/7973/files/rorugijenijisoxutajat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0765/4563/files/67230127319.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000071ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71EF | 5412 bytes |
SHA-256: 3be7945896c1cc74360e303f4c802daec47b599e33ad15729195d7d68d6ec4cb |
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font_01_sfnt_off0000842c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x842C | 12728 bytes |
SHA-256: 79d0c46c236b4b4fe6417048db43d13775a1c744a4d7a2d7dfa752c5884ba0dc |
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font_02_sfnt_off0000ae1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE1C | 16876 bytes |
SHA-256: 1494e5552df799d94b3b68bebddc71bf811e36043ba76cf76e39b3260abdad63 |
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