MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the nature of these links, and the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates a potential for hosting malicious content on legitimate but compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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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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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://irlanc.ru/uplcv?utm_term=flip+effect+android PDF link annotation
- https://groupburuemas2.com/contents/files/97735520580.pdfIn PDF document text
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ecb06ed965---volemuje.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16155e40d4cbf1---pituwedu.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/9609927885.pdfIn PDF document text
- http://hnkingdee.cn/Files/file/202196125212.pdfIn PDF document text
- https://highlander-inn.com/assets/userfiles/files/puwigu.pdfIn PDF document text
- http://steinemann-ag.ru/24977994046.pdfIn PDF document text
- https://sporyolu.com/resimler/files/lelowed.pdfIn PDF document text
- https://n-tlg.com/files/file/fesujuxepaxu.pdfIn PDF document text
- http://zonwering-nederland.com/ckfinder/userfiles/files/kupumunikuzadi.pdfIn PDF document text
- http://ipceurope.com/assets/file/sovexevuperufosoxitukekuv.pdfIn PDF document text
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141215e7bb9a---voporagekide.pdfIn PDF document text
- http://niszczeniewaw.pl/userfiles/file/vuwunepibilalobegera.pdfIn PDF document text
- http://getrade.net/uploadfiles/file/76357507262.pdfIn PDF document text
- https://maintogelonline.bet/contents/files/75220048688.pdfIn PDF document text
- http://kramor.bg/userfiles/file/88998129735.pdfIn PDF document text
- http://baoveantam.org/upload/files/wimefugotikugajuxatigam.pdfIn PDF document text
- https://romalasergroup.com/userfiles/files/ragudazevu.pdfIn PDF document text
- http://chekeeh.ir/basefile/chekeehir/files/55004315795.pdfIn PDF document text
- https://diphong.com/uploads/vojom.pdfIn PDF document text
- http://a-b-i-s.net/layout/bilder/file/pezep.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_off0000ab6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB6B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c37d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC37D | 15352 bytes |
SHA-256: 077ba25f668812e272abb7b0e5511908f5ddbf763eab5567a6379b3757a1600f |
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font_02_sfnt_off0000ea4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA4C | 10420 bytes |
SHA-256: 5b896c6ac1c1e55b95ad937f4e8cbb870542173985567857867a23c6b9bbcd9c |
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