MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of embedded links, many of which point to disposable hosting domains. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ggtraff.ru/strik?keyword=bipolar+disorder+types+pdf'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of numerous suspicious URLs and the ML classifier's high confidence indicate a malicious intent to lure users to harmful 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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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://ggtraff.ru/strik?keyword=bipolar+disorder+types+pdf In PDF document text
- http://files.braddykema.com/uploads/1/3/1/4/131437322/mugenoko.pdfIn PDF document text
- http://files.velvetandtulle.com/uploads/1/3/1/1/131164350/zuwusebapuze.pdfIn PDF document text
- http://rubila.hickmanhighschooltheatre.com/uploads/1/3/1/4/131406806/5342449.pdfIn PDF document text
- http://sijelon.ayefilmstudio.com/uploads/1/3/1/0/131070331/jemaragowavufelo.pdfIn PDF document text
- http://files.lavingtonurc.org/uploads/1/3/0/7/130776661/03c6c889.pdfIn PDF document text
- https://site-1036646.mozfiles.com/files/1036646/xunaroporitopiladorevetu.pdfIn PDF document text
- https://site-1037214.mozfiles.com/files/1037214/34197660665.pdfIn PDF document text
- https://site-1037164.mozfiles.com/files/1037164/36402761061.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/6487/6453/files/ncert_accountancy_book_class_11_solutions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1187/4716/files/list_of_antidiabetic_plants.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3346/8821/files/marathi_kadambari_online.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7516/5594/files/kizuzepuzegulozodazugoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0916/0854/files/31960000342.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/00bcafec-6b6e-407d-bd55-959d42407cfb/pobidovanevo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9ae6cf05-82be-4fb7-9d20-c8f8095709d9/1921235041.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d831652-9a38-4f68-b265-7e069730576e/47473321875.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007276.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7276 | 4868 bytes |
SHA-256: ff8ddb34f23b33b7a63c8e9cd2dca8ecf7ea32bbae893f2866568582f4ffb975 |
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font_01_sfnt_off00008318.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8318 | 10448 bytes |
SHA-256: 251095fb683c6de7a1371d1602ba8c05f07796789f79a230e0a39a8b60439bf6 |
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font_02_sfnt_off0000a6be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA6BE | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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