MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. Heuristics indicate the PDF acts as a link farm, pointing to multiple external URLs, some hosted on compromised CMS uploads. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://przyklejki.pl/userfiles/71614156959.pdf In PDF document text
- http://smwiarus.pl/ckfinder/userfiles/files/78587731525.pdfIn PDF document text
- http://fsgzb.com/upfolder/e/files/20210902130807.pdfIn PDF document text
- http://splogservice.ru/content/files/42741762214.pdfIn PDF document text
- http://gibisch.org/files/files/18456687900.pdfIn PDF document text
- https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/remusinobaka.pdfIn PDF document text
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/466bc78011e00d161af76e200f616006/65104024077.pdfIn PDF document text
- https://giaynangchieucao.com/userfiles/file/zopodaroguvezurinatajo.pdfIn PDF document text
- https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/2725504523.pdfIn PDF document text
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613529facb076---52218256150.pdfIn PDF document text
- http://studioarchterreni.it/userfiles/files/balubinateloguledisem.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb2e2efb75---66921721063.pdfIn PDF document text
- http://tianlanip.com/filespath/files/20210904133802.pdfIn PDF document text
- http://thangmayedex.com/webroot/img/files/lowonepumonaxezaw.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613c370c9c7d4---tuxupegezudiziku.pdfIn PDF document text
- http://ctyrkolky-gamax.cz/data/dokumenty/26430594028.pdfIn PDF document text
- https://octvads.site/js/ckfinder/userfiles/files/60754751034.pdfIn PDF document text
- http://recviem.ru/img/upload/butafakego.pdfIn PDF document text
- https://sharenkon.com/files/jimifigazefizovexifotu.pdfIn PDF document text
- http://akkoryazilim.com/userfiles/file/11344330017.pdfIn PDF document text
- http://voszveszprem.hu/_user/file/jetokogilokikomawasuv.pdfIn PDF document text
- https://eravukappalpalli.com/userfiles/file/87988301394.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=snapchat%2B%2B+download+2020+androidPDF 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_off0000b23d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB23D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca54.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA54 | 10712 bytes |
SHA-256: 48fff52aa5b691e2f310e17d2ca77bbe150c835905d42dd800c489219507132c |
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font_02_sfnt_off0000e2ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2EE | 14560 bytes |
SHA-256: 91735b82e9e3115b27cf779f8cdafe326a91ec2a2aa5e8bc4b4d988276e94a86 |
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