MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document containing embedded JavaScript, which is often used to redirect users to malicious websites. The heuristic findings indicate the PDF acts as a link farm, with many URLs pointing to compromised or disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://smidgel.ru/uplcv?utm_term=1491+charles+mann+pdf PDF link annotation
- https://ville-saintleonard.fr/pdf/jefesavixip.pdfIn PDF document text
- http://knuhpharm.kr/userfiles/file/20210916052720.pdfIn PDF document text
- https://eagle-aviation.com/userfiles/files/28335841383.pdfIn PDF document text
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/1d4844053edd0641d580c1ec76b6a0c7/rolakutarerixos.pdfIn PDF document text
- http://stsmcc.org/www/js/ckfinder/userfiles/files/4981392855.pdfIn PDF document text
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/350612950dc59324d8132ce4efb00b92/kofupulepulomijiregolinaw.pdfIn PDF document text
- http://mecaniquekd.ca/upload/file/6697257271.pdfIn PDF document text
- http://studiotecnicoforace.eu/userfiles/files/99403929278.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/7a66b40bba9e9f1e30f741639a85bebe/32889880452.pdfIn PDF document text
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/851ffa7665b24b7e0f2e97e3561aee82/suwibuzizelopam.pdfIn PDF document text
- https://stw-nowogard.pl/download/file/35091056749.pdfIn PDF document text
- https://institut-arabe.org/ckfinder/userfiles/files/65927169949.pdfIn PDF document text
- https://songod.vn/uploads/image/files/95179861201.pdfIn PDF document text
- http://matrix-corporation.com/upfiles/editor/files/86261277459.pdfIn PDF document text
- http://4998horo.gmmwireless.com/contents/files/wupekalapogotefevo.pdfIn PDF document text
- http://rw-hse-businessconsulting.de/userfiles/file/mezorukufugodafibotokuv.pdfIn PDF document text
- https://crcnueva.naturasoftware.com/uploads/images/files/nowokixunelapufunu.pdfIn PDF document text
- http://snap-drone.com/userfiles/file/fexoxaxuge.pdfIn PDF document text
- http://szpk.hu/_user/file/kefaweberilawivimumuvu.pdfIn PDF document text
- http://xn--42cfa4ewb0a0b3fwh.com/imageupload/files/13807915937.pdfIn PDF document text
- http://traktorpulling.de/ablage/userfiles/files/59436576822.pdfIn PDF document text
- http://www.dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/lasofofadasatawo.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://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_off0000e09c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE09C | 10776 bytes |
SHA-256: 3151350982d58ab481447f0e940c631e2e7b872afbdd72fed82fbed8c22e36f3 |
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font_01_sfnt_off0000f951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF951 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011163.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11163 | 19792 bytes |
SHA-256: 0b5f38de7408fc8530bbf3b5368653827f801246170e632ed36a538266b79188 |
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