MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF document that contains a large number of external links, many pointing to disposable domains or file-sharing services, indicating a link farm or SEO spam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as phishing or a trojan. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was programmatically generated. The primary attack pattern involves directing users to potentially malicious or spam content via embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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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External URI info PDF_URIPDF contains an external URL action
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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://ponafet.ru/award?keyword=arduino+uno+atmega328p+datasheet+pdf PDF link annotation
- http://hookup666.site/biology_research_proposal_samplehghud.pdfIn PDF document text
- https://piguvedulo.weebly.com/uploads/1/3/4/7/134724556/fobijusozesu.pdfIn PDF document text
- http://bestcreditcheck.info/nanotechnology_book_free88b5c.pdfIn PDF document text
- https://fafexozoruxefok.weebly.com/uploads/1/3/4/5/134527426/zalujezet.pdfIn PDF document text
- https://gotukedefiwukub.weebly.com/uploads/1/3/5/3/135309477/636c6.pdfIn PDF document text
- http://icub.tech/numaboviritexegibetepirin9nwzd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://4b67404f-136a-46a0-9cf3-151f2d38faab.filesusr.com/ugd/241fd5_c157c6a151464228b57fb561c65a0f5d.pdf?index=trueIn PDF document text
- http://bopunuzas.rf.gd/crusader_kings_2_best_leader_traits.pdfIn PDF document text
- https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_3387e82d130344838061c15cebedf599.pdf?index=trueIn PDF document text
- http://relamelekubapan.epizy.com/61325460994.pdfIn PDF document text
- https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_75b0fcad70844d64819a4f8959d049d6.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/farefasejikap/anyplace_control_7._0._4.pdfIn PDF document text
- https://s3.amazonaws.com/mejados/7631980882.pdfIn PDF document text
- https://b5f62e6e-b620-4b0e-90dd-fa81fc7fb5c2.filesusr.com/ugd/18d815_e3baa0c734554597845f20ee950c0be1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jevelel/worksheet_on_possessive_pronouns_for_grade_3.pdfIn PDF document text
- https://01ff271a-2d66-4e22-ac0f-a796646d2f56.filesusr.com/ugd/8d93e9_dc0d8939966c4b11ba6fa4193877d060.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zolerazowubow/62756936684.pdfIn PDF document text
- http://lijobexabip.rf.gd/wibuxogaduzesufevomom.pdfIn PDF document text
- https://s3.amazonaws.com/juliziwojatige/10445696176.pdfIn PDF document text
- https://0ed7c29b-d5f2-4290-8b47-add6aa38300d.filesusr.com/ugd/32a223_a62192055da54d1aa582d522ed310b47.pdf?index=trueIn PDF document text
- https://95049c82-e412-4913-a0b0-e03e83d5170a.filesusr.com/ugd/127d6e_e3f53698e26b4489bbda6661c21b0c71.pdf?index=trueIn PDF document text
- https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_f9b1fc0d0d31432d9864393e5ce68acd.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_off0000e983.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE983 | 5904 bytes |
SHA-256: 9cdc41aa20ec7e04b533c98f35be5a1e367b0f688455503d313916bb8481dc00 |
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font_01_sfnt_off0000fd75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD75 | 10696 bytes |
SHA-256: 6041eff8d51d5290e840fdccb2cc247a123b6b8a47f215843e5743a4f8e402eb |
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