MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous external URLs, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a non-clustered link farm on disposable hosting, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The presence of multiple PDF_URI firings further supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9940
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://cructi.ru/uplcv?utm_term=cara+cheat+gta+vice+city+android PDF link annotation
- https://sproname.com/files/userfiles/files/70148360968.pdfIn PDF document text
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/pajowuvabusigosigi.pdfIn PDF document text
- http://haki.vn/uploads/files/42061696015.pdfIn PDF document text
- https://rubfila.in/files/file/37276942904.pdfIn PDF document text
- http://thanhlapcongtykiengiang.com/upload/ck/files/tiked.pdfIn PDF document text
- http://phone-server.com/userfiles/file/10226316756.pdfIn PDF document text
- https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/wadavojed.pdfIn PDF document text
- https://www.fangjin.org/ckfinder/userfiles/files/nobepogokipogasesako.pdfIn PDF document text
- https://atrax.eu/userfiles/file/budemizevamimikugivo.pdfIn PDF document text
- http://angerdress.store/ckfinder/userfiles/files/29627199904.pdfIn PDF document text
- https://szekszardportal.hu/userfiles/file/xekakijuxeguz.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/c3532ec47f6fc79ae1d540bdc5010dc1/53082383076.pdfIn PDF document text
- http://www.siphonicflowmandiri.com/upload/files/82354928151.pdfIn PDF document text
- http://saxonrt.hu/img/userfiles/files/merapatumusufe.pdfIn PDF document text
- http://studiotecnicoforace.eu/userfiles/files/39098134747.pdfIn PDF document text
- https://opsclown.it/ckfinder/userfiles/files/557701012.pdfIn PDF document text
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16144c90a3086d---pipidip.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/89muie42gqemrpfpi17ceudkfn/46814078170.pdfIn PDF document text
- http://hzxf.com/images/upload/File/99223322704.pdfIn PDF document text
- https://realxenon.ru/uploads/files/jinoxevil.pdfIn PDF document text
- http://spartapr.com/images/upload/file/bimimuvakexiwiz.pdfIn PDF document text
- http://mmprogetti.it/userfiles/files/rolesivakimof.pdfIn PDF document text
- http://xindeshiye.com/uploadfile/file///2021090612371266.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2610cc056---59904432344.pdfIn PDF document text
- http://erulingua.hu/uploads/content_files/files/gemokibafo.pdfIn PDF document text
- http://rpsbchamber.org/editorData/file/54567780546.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_off0000bd45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD45 | 10648 bytes |
SHA-256: b3009e5cde338fc025667136f3f893ff6c4281d6031365d78c654958aae9594b |
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font_01_sfnt_off0000d578.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD578 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ed8a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED8A | 16588 bytes |
SHA-256: af09d3c595e108f71ceb5c16ca5ef7d5003ba9b8c236d02a85ca97e3f87e285e |
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