MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded JavaScript stream and numerous external URIs, many pointing to compromised CMS uploads and disposable hosting, suggest it functions as a link farm designed to redirect users to malicious sites. The primary purpose appears to be distributing further malware or conducting phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://inwebjor.ru/uplcv?utm_term=spm+occupational+therapy PDF link annotation
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410ea0c6fbe---66898522375.pdfIn PDF document text
- https://www.agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/28139049191.pdfIn PDF document text
- http://petraifevronii.ru/ckfinder/userfiles/files/63418162427.pdfIn PDF document text
- https://ajansnigde.com/resimler/files/nagef.pdfIn PDF document text
- https://mamalight.org/business_school/uploads/file/50241133478.pdfIn PDF document text
- https://discovercefalu.it/_data/images/file/52195268227.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16154483bd9a6c---judowifapo.pdfIn PDF document text
- http://wooshin.kr/uploaded/file/127153947161317ebb728cc.pdfIn PDF document text
- http://unipsyclinic.com/userfiles/file/20211004034822.pdfIn PDF document text
- http://ajej.pretty-match.com/upload/files/54275930027.pdfIn PDF document text
- http://bienchidan.org/uploads/files/67713701205.pdfIn PDF document text
- http://realestatespoznan.com/uploads/gosegapeguxinolojilunuw.pdfIn PDF document text
- http://xn--h1aeekk.xn--p1ai/files/file/keretixofenamapimezap.pdfIn PDF document text
- http://hajnysport.cz/FCK_userfiles/file/6148297110.pdfIn PDF document text
- https://venus-forever.com/image/files/wimowapepet.pdfIn PDF document text
- http://appartenvue.net/appart/upload/images/vovavuzaxubir.pdfIn PDF document text
- http://chiangmai-clean.com/user_img/files/42067698986.pdfIn PDF document text
- https://tekartltd.com/upload/files/39168785818.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/18f8ba11efc35b69eea16760296f067e/vifemavugig.pdfIn PDF document text
- https://ikima.fr/uploads/file/61767206782.pdfIn PDF document text
- http://abcs.umontreal.ca/upload/files/58624183166.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_off00012fd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FD8 | 10760 bytes |
SHA-256: 1af6f233bd2a5136ccc507e9a64c220ec7f3deb8d3a97c8eed5881e799df756d |
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font_01_sfnt_off00014863.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14863 | 20256 bytes |
SHA-256: 5fad3be54ac363259a134ea2f02d61ee03ecfffba7abf983474b36435fd1a042 |
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font_02_sfnt_off00017d18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17D18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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