MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to distribute malware or host phishing content. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to malicious infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
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://chcial.ru/uplcv?utm_term=wss+3.1+latest+apk
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16142226c91f45---mujazuzujov.pdf
- http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb34a8b424---38129411015.pdf
- http://xinge168.com/uploads/files/20210908072401_301491.pdf
- http://ownlines.com/upfiles/file/nurirabapixebesisimo.pdf
- http://caycanhtuyhien.com/uploads/image/files/44250875055.pdf
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c01d1d6633---35261292775.pdf
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/2e5aup91fbebjn75rg5kva36l6/dagovej.pdf
- http://handinks.com/ckfinder/images_store/files/tobopunalovugom.pdf
- http://istihdamhaberleri.com/upload/ckfinder/files/90372502370.pdf
- http://shopgraeagle.com/ckeditor/uploads/files/povoxegajaselokufigavuf.pdf
- http://infoguard.ru/content/file/fevujep.pdf
- https://bushregenerators.com/userfiles/files/47404510973.pdf
- http://savitaco.com/uploads/images/files/megisepimajo.pdf
- https://avistravel.ro/userfiles/file/30633749550.pdf
- https://indobaliart.com/sitefiles/file/vanotokikamavopoxapod.pdf
- http://daiduongmetal.com/uploads/ckfinder/files/23320568604.pdf
- http://officeharbor.com/pdtInfo/35783350367.pdf
- http://eyela.kr/uploadfile/fckeditor/file/66207636454.pdf
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/a445190f8e180f3174941a13fd0c4cc0/12909077751.pdf
- http://reicar.dk/userfiles/file/xubumanunim.pdf
- https://035620126.tw/upload/greenkitchen/files/27449549547.pdf
- https://izr.fr/files/54856913148.pdf
- http://5thaveseniors.org/userfiles/file/fiwimetezurabipiz.pdf
- https://congtydaihai.com/upload/files/kigik.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/0c435cc4eab0a1e9fb42ec0f41dbde05/xibasobijanig.pdf
- http://wuxihemei.com/ckfinder/userfiles/files/20210910_073215.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2d7acc173---61629406739.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000da3a.bin8eac0d1388cb000568084c5b6d8d561e7ef35ca085a383b87200708ad299c36b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA3A | 10204 bytes |
font_01_sfnt_off0000f160.binae0c70c12c5eaef04d5fcae69806133a44af518ed88196f5c217b2243505fd50 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF160 | 17696 bytes |
font_02_sfnt_off00011fb4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FB4 | 16792 bytes |
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