MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or disposable hosting. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'yafferge.ru' as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://yafferge.ru/strik?utm_term=lords+of+chaos+stream+netflix In PDF document text
- https://cdn-cms.f-static.net/uploads/4477386/normal_602d4a326e2b4.pdfIn PDF document text
- https://zuzivosojix.weebly.com/uploads/1/3/0/7/130775151/655a5a7e.pdfIn PDF document text
- http://armada.technology/8252790284zyja2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417528/normal_60278d981d13a.pdfIn PDF document text
- https://vinozesuwoda.weebly.com/uploads/1/3/4/6/134685541/9cfd279eabf.pdfIn PDF document text
- http://jadebey-x.com/2006_mitsubishi_eclipse_manual_transmission_fluidt4j9x.pdfIn PDF document text
- http://italia-doc.space/60288501836ot797.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9ed119ad-1df1-48c5-ab5c-ea7454d4c51d/petsafe_training_collar_directions.pdfIn PDF document text
- https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_60ee892e841f430e8edef7d4ac23b66d.pdf?index=trueIn PDF document text
- https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_42523d30a5fc43a18e38c94362776fba.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/dda455d7-0698-4ae4-9403-6db78234dfdc/zoom_g1x_four_instructions.pdfIn PDF document text
- https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_8d25644408504734b886d6040093025d.pdf?index=trueIn PDF document text
- https://88966db1-4a83-4446-b941-f65022a6235f.filesusr.com/ugd/928e0f_b82a8de9646c4e90b90de4c0c7aad016.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/408e78a6-09e1-4f52-8fb2-1880dacc26ef/cub_scouts_near_me.pdfIn PDF document text
- https://f1ddcea9-c323-452c-a4d3-aaefec61e50a.filesusr.com/ugd/defd8a_73b01f7d412845cd9529584867a0b097.pdf?index=trueIn PDF document text
- https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_fe26c5d1af354bdc926c3cb5246d160d.pdf?index=trueIn PDF document text
- https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_0511b72fabaf4ffe92d614b7a56109d2.pdf?index=trueIn 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_off0000e0d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0D7 | 5272 bytes |
SHA-256: 224f7bd4029f696b06e77403a0893b9fdcbafcb1a930929e4a5cc2b3294cb356 |
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font_01_sfnt_off0000f2a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2A0 | 10460 bytes |
SHA-256: 3fc9f651c7ec1c873bf6b960ccf78a232d154ea0aba806994e256a3072c3f89d |
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