MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external URIs and is flagged as a link farm, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as a phishing trojan. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure, but the presence of compromised CMS upload links and disposable hosting reinforces the malicious nature of the linked content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9934
Heuristics 6
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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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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://medvor.ru/uplcv?utm_term=cinema+6+stephenville+showtimes PDF link annotation
- http://ruishikaishi.com/upload/content/files/2021/09/20210922161124.pdfIn PDF document text
- http://hysansam.com/fckeditor/userfiles/image/30535962368.pdfIn PDF document text
- http://odontoflash.eu/userfiles/files/67099835869.pdfIn PDF document text
- http://www.udelimpa.es/ckfinder/userfiles/files/71548235270.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/ea76e3c97d4f379cceee0587a1a3e968/89397522519.pdfIn PDF document text
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/ec0d8e9931063884c28a2ae9a261906c/9977352825.pdfIn PDF document text
- http://siamintertrade.com/file_media/file_image/file/sixabarawugadowurusiz.pdfIn PDF document text
- https://kubermatkaplay.com/ckfinder/userfiles/files/relomapakopebamuta.pdfIn PDF document text
- http://kajo-frings.de/userfiles/file/rerupigelup.pdfIn PDF document text
- https://thai-airpark.com/ckfinder/userfiles/files/gabiwumuwigawosubi.pdfIn PDF document text
- http://aqcorth.specialty-match.com/upload/files/89248251718.pdfIn PDF document text
- http://standardamulet.com/files/files/39647579080.pdfIn PDF document text
- https://siltri.com/fck_upload/file/73596833912.pdfIn PDF document text
- https://bruceleevideos.org/images/file/85799136250.pdfIn PDF document text
- https://heks-tech.com/app/webroot/userfiles/files/dutezofaxinebo.pdfIn PDF document text
- https://greenlakecruises.com/ckfinder/userfiles/files/selilewebiz.pdfIn PDF document text
- https://netpage.info/userfiles/file/ritiroxomaki.pdfIn PDF document text
- http://dlzhrjd.com/images/uploadfile/files/gajuwolitijoxopeba.pdfIn PDF document text
- http://tecniagua.es/uploads/ckfinder/files/59051525795.pdfIn PDF document text
- https://casalindasbakery.com/ckfinder/userfiles/files/25974198144.pdfIn PDF document text
- http://ipsaix.com/ckeditor/ckfinder/userfiles/files/94479551962.pdfIn PDF document text
- https://equalitas.es/userfiles/file/32280330655.pdfIn PDF document text
- https://avela.md/userfiles/file/26693905688.pdfIn PDF document text
- https://durgabas.coop.np/ckfinder/userfiles/files/mivus.pdfIn PDF document text
- https://chasehr.in/userfiles/file/perinapiworipetifalasufo.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16155db77065c6---91546864611.pdfIn PDF document text
- https://hkki.org/userfiles/files/77439521069.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_off0000bafb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAFB | 10768 bytes |
SHA-256: 488d5c25ff89a39bb359a4e957898e4f46fc1bcb1b94b010322a35df3e8ce42f |
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font_01_sfnt_off0000d3ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3AB | 19876 bytes |
SHA-256: 4133d3ac09065d497db5d45568c7d3af1209a1a5da1c0a60fdfea766b71936c8 |
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font_02_sfnt_off000106c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106C2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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