MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to multiple domains, some of which are hosted on compromised WordPress sites. The presence of numerous unknown URLs suggests a redirection mechanism to potentially malicious or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e08a78825---japexezixijepifajesop.pdf In PDF document text
- http://dison.cn/filespath/files/20210917120356.pdfIn PDF document text
- https://ceiling.holcom.vn/webroot/img/files/59717972426.pdfIn PDF document text
- http://dieukhactransam.com/uploads/files/miwamapukisonawomuwupanej.pdfIn PDF document text
- http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/zijifu.pdfIn PDF document text
- https://digireg.sk/upload/31263230407.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fbf322b2d3---mijorajus.pdfIn PDF document text
- http://adfaveo.com/image/files/20210915_221519.pdfIn PDF document text
- https://madspot.dk/ckfinder/userfiles/files/9903550700.pdfIn PDF document text
- http://yummyschool.com/_UploadFile/Images/file/91326873606.pdfIn PDF document text
- https://jooli.ru/ckfinder/userfiles/files/lemisenip.pdfIn PDF document text
- https://aiaciran.org/cache/fck_files/file/fidizekuro.pdfIn PDF document text
- http://namhungholdings.com/uploads/ckfinder/files/76112425076.pdfIn PDF document text
- http://instant-image.net/UserFiles/Site/File/80085078628.pdfIn PDF document text
- http://signauction.net/userfiles/file/293147229.pdfIn PDF document text
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/76rgbl9r4mce7or8kguluavd49/15802586384.pdfIn PDF document text
- http://farmaciafasolis.eu/userfiles/files/xidozakikepa.pdfIn PDF document text
- https://vasantviharproperties.com/userfiles/file/65610930544.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/nilgh2vkg3t66rml6hp1o3f8nc/vaxefekozafo.pdfIn PDF document text
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161385fa553d62---58961277591.pdfIn PDF document text
- http://tidomusica.com/uploads/files/202109011449437517.pdfIn PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161328cd376cf9---68456530318.pdfIn PDF document text
- https://oancora.com/ckfinder/files/wagowusavefonageno.pdfIn PDF document text
- http://pozitron-s.ru/userfiles/file/lapupabimisuwipo.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=woocommerce+android+app+nulledPDF link annotation
- 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_off0000e3b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3B6 | 18316 bytes |
SHA-256: f74179460e1bcb13931309a0ff9729e18ad279eb51e7aa2c0e216bc729aca09c |
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font_01_sfnt_off00011334.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11334 | 10500 bytes |
SHA-256: e13da95d9342d31a4e8d9caf8c58b885f6bebfd4e7626bddd3a53d235ebeef24 |
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font_02_sfnt_off00012af7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AF7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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