MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document exhibits characteristics of a link farm, containing numerous embedded URLs pointing to external PDF files hosted on disposable domains. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection further support its malicious nature, indicating it functions as a dropper.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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ClamAV: Pdf.Dropper.Agent-9526240-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-9526240-0
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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://ttraff.cc/wb?keyword=applied%20numerical%20methods%20in%20c%20pdf In PDF document text
- http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdfIn PDF document text
- http://files.walkwithgantz.com/uploads/1/3/1/4/131406108/liradenesuxaj-vuxugori.pdfIn PDF document text
- http://files.jimstamperjewelry.com/uploads/1/3/2/3/132303092/guravapajimofaz_xexam_tezuwagok_bavig.pdfIn PDF document text
- http://files.healthyforest.ca/uploads/1/3/1/4/131453248/rokoliz.pdfIn PDF document text
- http://files.ayanakyounglawllc.com/uploads/1/3/2/6/132681398/42eaadf4.pdfIn PDF document text
- http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdfIn PDF document text
- http://files.judymtomlinsonphotography.ca/uploads/1/3/1/8/131872138/midumafeganabagosutu.pdfIn PDF document text
- http://files.alexstudio.bg/uploads/1/3/1/1/131164448/875fbb5e4c12d5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://vomobudutud.files.wordpress.com/2020/06/63316366149.pdfIn PDF document text
- https://zexosutu.files.wordpress.com/2020/06/32832940718.pdfIn PDF document text
- https://kovimaj.files.wordpress.com/2020/06/xofoluzawubo.pdfIn PDF document text
- https://baboraxotav.files.wordpress.com/2020/06/wutabolikinaxa.pdfIn PDF document text
- https://venazuburam.files.wordpress.com/2020/06/86781311672.pdfIn PDF document text
- https://vupejesos.files.wordpress.com/2020/07/winanubaran.pdfIn PDF document text
- https://gadaxug.files.wordpress.com/2020/06/zeruxanexebuvewug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kitona.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.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_off000048c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x48C5 | 5264 bytes |
SHA-256: 5219807406821d4aac628b06111102b56d55737bd19eaa139cf8c69715970384 |
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font_01_sfnt_off00005a65.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A65 | 9608 bytes |
SHA-256: 352e0408b89a9c61f691d4766aef0540f0cd31cef8b1b153d7ee664d9d44e7ab |
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