MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many of which point to compromised WordPress sites or disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or trojan delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 http://www.jacenter.org/js/ckfinder/userfiles/files/91057401346.pdf In PDF document text
- http://www.farnostbobrova.cz/ckfinder/files/79048605812.pdfIn PDF document text
- https://icrs-as.com/userfiles/file/sixidotosonetebab.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613333e4e9545---25888362465.pdfIn PDF document text
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/101f189e08c52bf434b656e00cfb1ddc/55821965120.pdfIn PDF document text
- https://gsm.company/ckfinder/userfiles/files/44681853014.pdfIn PDF document text
- http://tacchigroup.com/public/thread/risorse/file/81445817158.pdfIn PDF document text
- http://ithalattagarantibelgesi.com/resimlerfiles/89665041098.pdfIn PDF document text
- http://primeasset.hu/fileok/file/39918260449.pdfIn PDF document text
- http://saga.diamonds/uploads/ckfinder/files/43666332537.pdfIn PDF document text
- https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139518e4d62c---33738666008.pdfIn PDF document text
- https://weekendtripskolkata.com/userfiles/file/pawebebewagufivo.pdfIn PDF document text
- http://tandartsindex.nl/images/uploads/zafalu.pdfIn PDF document text
- http://recrute.fr/files/files/daxuzarizira.pdfIn PDF document text
- http://synowka.pl/galeria/file/9252123051.pdfIn PDF document text
- http://status.cz/UserFiles/File/94560508636.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16136955f35661---kovotiza.pdfIn PDF document text
- http://naturestuff.nl/siteimages/file/pefev.pdfIn PDF document text
- http://gzafjc.com/uploadfile/files/powisinivuvozavafimitu.pdfIn PDF document text
- http://elard-group.com/ckfinder/userfiles/files/mudetof.pdfIn PDF document text
- http://mqskin.com/luutru/files/xajakawaremanik.pdfIn PDF document text
- https://divanich96.ru/admin/ckfinder/userfiles/files/9736277175.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=animestack+2020+appPDF 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_off0000ddbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDBF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f5d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5D6 | 10584 bytes |
SHA-256: 109a3860e3a985321e4bde3d631fe3c7600e50cd968c5da0c665d447e24a9a7a |
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font_02_sfnt_off00010e1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E1B | 17728 bytes |
SHA-256: 0d0613f37fc0d5d7df0f47df0e5e98220f5c017b30df64709e2bb9508d755c32 |
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