MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 7
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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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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://chcial.ru/uplcv?utm_term=high+d+on+flute PDF link annotation
- http://systempro.kr/userData/board/file/55710500285.pdfIn PDF document text
- https://alihuata.com/userfiles/file/11820479453.pdfIn PDF document text
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131ca87a36b4---55019804193.pdfIn PDF document text
- https://roarmysecurity.ro/mm/file/galutizopufidegefumuluku.pdfIn PDF document text
- http://ecohouse-lab.com/userfiles/file/94640735763.pdfIn PDF document text
- https://www.willmarshelter.com/ckfinder/userfiles/files/dilidiloremo.pdfIn PDF document text
- http://taociren.com/upload/file/21091010023535162636pz57dgebyt.pdfIn PDF document text
- https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/69113888210.pdfIn PDF document text
- http://bellamy.tw/uploads/files/202109091757452177.pdfIn PDF document text
- http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161407ea4e03d6---meniru.pdfIn PDF document text
- http://portaldeaquidauana.com.br/ckfinder/userfiles/files/13707624800.pdfIn PDF document text
- https://tramhuonghanoi.vn/upload/files/lidazofewel.pdfIn PDF document text
- http://hemeringen.de/ckeditor_ablage/userfiles/files/bulizarutafukefalikavo.pdfIn PDF document text
- http://tienphat.vn/imagesflashupload/file/24741931864.pdfIn PDF document text
- http://cn-daomeng.com/upload/userfiles/files/bb899aa5527a69450aa14a352e6b9c28.pdfIn PDF document text
- http://www.sana-anong.com/ckeditor/ckfinder/userfiles2/files/mafoso.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16135ceee34378---banawavozifudazidigot.pdfIn PDF document text
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16148ad0923420---firaxafiw.pdfIn PDF document text
- https://jotelek.hu/files/file/1688276794.pdfIn PDF document text
- http://m-styleauto.com/js/upload/files/35248764845.pdfIn PDF document text
- http://virus-safe-zone.com/ckupload/files/namurubofosepofavefusikel.pdfIn PDF document text
- http://skogsformedling.se/bilder_umeny/File/69120039801.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_off0000be20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE20 | 10296 bytes |
SHA-256: bfae83ae384ee594158edde7d8f00749001aef9f7350ae6c761b3ebdbe27c833 |
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font_01_sfnt_off0000d4e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E7 | 17204 bytes |
SHA-256: 2163034a35c9f1250567ee6ec53e323b3a723433861ad15e6c48f288de6e1120 |
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font_02_sfnt_off000101a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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