MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external URIs, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608faab3e40f6---votosigaviwoj.pdf In PDF document text
- http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/28355188607.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/eb380d0b36c6c46b70f27f1b81345181/ruzumezewem.pdfIn PDF document text
- http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4f490cd1f5---bevol.pdfIn PDF document text
- https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/s1annd7kqafukol3c52flfv0u6/8951941219.pdfIn PDF document text
- http://clarksville.net/wysiwygfiles/file/24617446169.pdfIn PDF document text
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/87b4e6b609bd65e8b08363a3636509d8/bezifu.pdfIn PDF document text
- http://malbreil.com/userfiles/file/bigirozetuja.pdfIn PDF document text
- http://bociany.sk/media/file/49062070637.pdfIn PDF document text
- https://emilline.dk/ckfinder/userfiles/files/xulajotowatebovif.pdfIn PDF document text
- https://ngusacdon.com/upload/files/47812823307.pdfIn PDF document text
- https://travelsafeway.com/userfiles/file/gesevifizorigepujov.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/kofobowabokopixaku.pdfIn PDF document text
- https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/ec41844bba2414d9baf738b872660932/52723937911.pdfIn PDF document text
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e2a10e0de7---wotegasubuxumawugeg.pdfIn PDF document text
- https://cambodiaangkorhomestay.com/userfiles/file/65103415348.pdfIn PDF document text
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d024e86dc4c---71269613587.pdfIn PDF document text
- https://gmt-tw.com/app/webroot/userfiles/files/vejomebutijirabozazexe.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/9b228c6d5db528708355511f17dfdac7/jakimodukukoropusuzas.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ffb0c997cfb---sawiromixavenufawuzide.pdfIn PDF document text
- http://docando.es/js/ckfinder/userfiles/files/vazumuwazadimuwu.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607784e9e4b7d---jijolebalakekenuzedonu.pdfIn PDF document text
- https://ferado.vn/userfiles/file/69338165879.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/o1j274j2thb5l9ai95eco0s3fs/17178284798.pdfIn PDF document text
- http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/90472297575.pdfIn PDF document text
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9755f2ebcb---83649957679.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+trade+volatility+indices+pdfPDF link annotation
- 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://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_off0000f3ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3CA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010bdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BDC | 17692 bytes |
SHA-256: d22fd35141883a5ff97e8a8d473d54e6a197b88f6fe4c28ba94a3f96a50c07f7 |
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font_02_sfnt_off00013a20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A20 | 10868 bytes |
SHA-256: 4b27139bb8e108f04aff7d6230ecec337355187c23ae91e4ac4c95b65911cd33 |
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