MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded URLs pointing to other PDF files, many hosted on disposable domains. One URL, https://cctraff.ru/strik?keyword=antithrombine+3+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign, designed to lure users to malicious content or potentially download further payloads.
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://cctraff.ru/strik?keyword=antithrombine+3+pdf In PDF document text
- https://site-1036811.mozfiles.com/files/1036811/lutigukiwigika.pdfIn PDF document text
- https://site-1036951.mozfiles.com/files/1036951/35370676000.pdfIn PDF document text
- https://site-1036920.mozfiles.com/files/1036920/54759684155.pdfIn PDF document text
- https://site-1036722.mozfiles.com/files/1036722/90138017518.pdfIn PDF document text
- https://site-1036852.mozfiles.com/files/1036852/73890310798.pdfIn PDF document text
- https://site-1037029.mozfiles.com/files/1037029/25729794451.pdfIn PDF document text
- https://site-1037266.mozfiles.com/files/1037266/munisixupojibuginedeno.pdfIn PDF document text
- https://site-1037260.mozfiles.com/files/1037260/vomijuvenabirafumufizipev.pdfIn PDF document text
- https://site-1036639.mozfiles.com/files/1036639/xujudazubejijuzipopupi.pdfIn PDF document text
- https://site-1036861.mozfiles.com/files/1036861/4368329531.pdfIn PDF document text
- http://tovuj.robertlpalmer.com/uploads/1/3/2/6/132683209/pudere.pdfIn PDF document text
- http://kavitu.hackettville.com/uploads/1/3/1/4/131482975/d3ade.pdfIn PDF document text
- http://revudaxev.georgeflcharlesairport.com/uploads/1/3/0/7/130775136/388e9.pdfIn PDF document text
- http://files.matthewcoatney.com/uploads/1/3/1/4/131407284/sezarufemumomore.pdfIn PDF document text
- http://files.batterypowered.co.uk/uploads/1/3/0/8/130874668/6631c2872f3.pdfIn PDF document text
- http://juvotosak.restorationalleydiy.com/uploads/1/3/0/7/130740537/varin.pdfIn PDF document text
- http://files.gypseyteague.com/uploads/1/3/0/7/130776861/denalepusokapis-pojefuv-wutijix.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off00005ca4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CA4 | 5156 bytes |
SHA-256: ee95118f4128234f21c6b12ab52906a09159777613b4a2de42e7e01a8f8ed38c |
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font_01_sfnt_off00006e06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E06 | 15432 bytes |
SHA-256: 66ca6b14f99979273cc02904e38d8d26a4550eac91a6c73b36e5ae82e99c842e |
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font_02_sfnt_off00009bd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BD6 | 16204 bytes |
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15 |
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