MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to potentially compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URI heuristics and the 'PDF_SEO_DISPOSABLE_LINK_FARM' rule further support this. No scripts were extracted, and the document body was unreadable, so the attack pattern is inferred from the URL structure and heuristic firings.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://haustechnik-hagenauer.at/89393625500.pdf
- http://malopolskiszlakwinny.pl/upload/File/xukisusuxerop.pdf
- http://ez-surveying.com/htdocs/cljr/data/files/zuxiganokatulogalade.pdf
- https://matharu.ae/userfiles/file/wedokewenekidajuj.pdf
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613540fda0d28---86538424109.pdf
- https://brawlcall.jordanadams.com/ckfinder/userfiles/files/28189951961.pdf
- https://enkaotomatikkapi.com/depo/sayfaresim/file/nisipefefinaxidebujinor.pdf
- http://cesarrodarte.com/userfiles/file/sadowoxixefonogodif.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136346a7a256---31191939218.pdf
- http://sedaciesupravy.sk/media/file/74322828227.pdf
- https://vhcvietnam.vn/ckeditor/images/files/kuzegewisewe.pdf
- https://akproauto.com/nbloom/fckuploads/file/83143597141.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/fanepajagudotagapuxaga.pdf
- http://espwireless.net/uploads/file/pubowiwibenadufenuten.pdf
- http://halmar.info/userfiles/file/44238537198.pdf
- http://kozelsk-adm.ru/files/uploads/files/43800336908.pdf
- https://ou-ravda.com/ckfinder/userfiles/files/peposolosazaluvofop.pdf
- https://hijaustabilo.com/contents/files/samoro.pdf
- http://4seasonstours.in/userfiles/file/94739968343.pdf
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/835c3e7bfe7ee5de134ed1289b1d0308/seduritejabowimixuroki.pdf
- http://seoulgreeter.com/userData/board/file/69001654195.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=remote+desktop+from+android+to+windows+10
- 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_off0000de4a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE4A | 16792 bytes |
font_01_sfnt_off0000f661.bin9bba0ee36f231f63fe32268f24e2b9dec497b32afc6a67a6cae94c99eaa1dec0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF661 | 11008 bytes |
font_02_sfnt_off00011014.bin06dd31b4f92961a274ebba1ef5ff5c20ba709864138bd040d2816c3d885ce3d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11014 | 17844 bytes |
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