MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing attempt. It contains numerous external links, many of which are part of an SEO link farm designed to redirect users. The primary malicious URL identified is https://vilenefex.ru/123?utm_term=adblock+plus+for+torch+browser+free, which appears to be a redirector for a phishing lure. No scripts were extracted, but the PDF structure and link farm indicate a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://vilenefex.ru/123?utm_term=adblock+plus+for+torch+browser+free PDF link annotation
- http://goladelexugezi.sportsontheweb.net/45976564960.pdfIn PDF document text
- https://xewaxamuroz.weebly.com/uploads/1/3/4/5/134529724/vatajujul.pdfIn PDF document text
- https://s3.amazonaws.com/jupoti/gujatijulemawizetafepe.pdfIn PDF document text
- https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/relefevifazuwiposu.pdfIn PDF document text
- https://s3.amazonaws.com/selivuvumepaveb/70419121998.pdfIn PDF document text
- https://s3.amazonaws.com/padosumifubobo/katatuj.pdfIn PDF document text
- http://xesapuwax.mywebcommunity.org/apostila_auditor_fiscal_da_receita_federal_download_gratis.pdfIn PDF document text
- https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/6993846.pdfIn PDF document text
- https://s3.amazonaws.com/mixanaz/business_administration_interview_questions_and_answers.pdfIn PDF document text
- https://pedumodab.weebly.com/uploads/1/3/1/6/131637036/15d7406a2840d.pdfIn PDF document text
- https://s3.amazonaws.com/mefonevimimix/52065088069.pdfIn PDF document text
- https://xorowime.weebly.com/uploads/1/3/5/3/135307705/3822669.pdfIn PDF document text
- http://wejuveziwep.mypressonline.com/34642277219.pdfIn PDF document text
- https://s3.amazonaws.com/lotibabakuj/nelapuvofubeki.pdfIn PDF document text
- https://s3.amazonaws.com/tutapaxi/zisufudonugateborani.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_61486d8dd69e40d08bb062a4a9f011d9.pdf?index=trueIn PDF document text
- https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_2573fd06573c44b2988b6e22f6b89279.pdf?index=trueIn PDF document text
- https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_912542f4afe14033b060f494803d222e.pdf?index=trueIn PDF document text
- http://vefodipox.myartsonline.com/91608278656.pdfIn PDF document text
- https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_53a6b5055b0245639498f4e9d837045f.pdf?index=trueIn PDF document text
- https://b3695a61-a5b7-457a-863f-99677d03e0cc.filesusr.com/ugd/f2a82d_f49ba0dfd5a348bdb743d6a61c0a34a8.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
- 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_off00013b71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B71 | 5316 bytes |
SHA-256: 884f79cdda166095c7cac2145a5e254054f7b7d90957bb1a8787685883a1dc9c |
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font_01_sfnt_off00014d93.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14D93 | 10904 bytes |
SHA-256: 0a2eb9672cb6e82ca6853ca04009c974ac1f8137258127cd5cb25bb01e47b9c5 |
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font_02_sfnt_off000172e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x172E3 | 17444 bytes |
SHA-256: 2e2406a23c4eda4333e1700c11bf9bf530ea6b24fb47f233129a6652b68d8e8d |
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