MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many of which point to compromised CMS upload directories or disposable hosting. This behavior is indicative of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. The ML classifier and ClamAV detection strongly support the malicious nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9874
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 http://coeb.eu/userfiles/files/gubebudajetuwezu.pdf
- http://akcjonariusz.com/UserFiles/file/tatedig.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083cf74dcf69---5348222743.pdf
- https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/12d8f41d1021dfcdf42bfb02d71af542/63302364203.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8fbe88eca---tixoniboxenetegapebow.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7f5afb647c2fd8abfb64aec5d75db855/74973558953.pdf
- https://angelsstaff.com/uploads/file/96919960463.pdf
- http://akinmedikal.com/uploads/file/30255744130.pdf
- http://jncs.kr/page_data/file/20210609040114.pdf
- https://transmar.biz/ckfinder/userfiles/files/45127733084.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/9d374d5682f1262d6abf861e0387c1f5/dupadik.pdf
- https://ontech.vn/images/ckeditor/files/6267755467.pdf
- http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c57da75b9a---sasekezasawese.pdf
- https://alternativecarrepair.com/userfiles/file/97606247117.pdf
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16077acbfd6fa6---naposusujefofij.pdf
- http://www.ecvbrass.ch/user/web/file/zujujuxufigibosedonaf.pdf
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57be2dac5d---liduluvovos.pdf
- http://boxerdapolenta.com/cmsimple/images/file/45131000532.pdf
- http://shinies.ru/img/lib/file/93491970665.pdf
- https://alquimia.in/admin/fckeditor/editorfile/mixujenokatepeza.pdf
- http://bogelaipigeon.com/upload/file/98373182979.pdf
- http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c568ca93a---54255543601.pdf
- https://alshamiltrading.com/alshamilfiles/file/milusenubenitoj.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c3021f0685c---sowosidiji.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=firm+meaning+in+arabic
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_005_off00015d36.bin88d8c6259e6fed448099cf40d95836b436576c124680a260bc0ffa502dcb85c9 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x15D36 | 30456 bytes |
font_00_sfnt_off000105ee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105EE | 16792 bytes |
font_01_sfnt_off00011e00.bin63a6ffa1e5f3768e87c5db31ff71f2c9633bcf205c140555e0fbd740558e69f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E00 | 15672 bytes |
font_02_sfnt_off00014641.bind5ff1693aed9b11b18ad0d5b573b52bcb8dba5bcff08359395ee2d1a0be3d06d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14641 | 10260 bytes |
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