MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal the presence of embedded JavaScript and numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from one of the provided URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9932
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://archism.ru/uplcv?utm_term=rational+male+pdf+download PDF link annotation
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/0d187fe7f3319fc23a4db0fcafd94d01/16111681211.pdfIn PDF document text
- http://digitalqwerty.com/ckfinder/userfiles/files/24586495760.pdfIn PDF document text
- http://cunningham-reunion.com/clients/7/73/7399477c88ef979e1ad3ac38e42cffcc/File/90014645306.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/hv1qc3ak5u1pti7dgug9ld494i/49026716249.pdfIn PDF document text
- https://yukkumpulgroup1.com/contents//files/natetexapu.pdfIn PDF document text
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/835588776006e0437bb2ebfb075767c8/32499651579.pdfIn PDF document text
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607df2636760e---88027782177.pdfIn PDF document text
- http://www.urbanwaterways.info/files/49700197664.pdfIn PDF document text
- http://trendybiz.in/usersfiles/file/18318429797.pdfIn PDF document text
- http://anipetkingdom.com/webroot/img/files/padasawatasaxodawug.pdfIn PDF document text
- http://susutour.com/userfile/file/pumuwibirijuxujelu.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085a7ccdd3be---92123637139.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/37618825528.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccac961e84---tarogakaxokad.pdfIn PDF document text
- https://apoiotelecom.com/imagens/img_fckeditor/file/valagosesapinilopowa.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/km5bu9sm2563h8o957h08ao1p2/guzirikugotevuv.pdfIn PDF document text
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/b414aa0554d065e9323e39bd690cc051/27408675242.pdfIn PDF document text
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/qgr4s0j128vhcf426kbu1rrb3l/18609624661.pdfIn PDF document text
- http://aldo-ins.com/userfiles/file/4619398102.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/ae3a4ac2ed2d2b7305d2091a48308e67/98841952596.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ec6091df2---zijosasuzafud.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/4d713726868a73ce50fa9d36b75dc93d/86212280990.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c28a87abca9---nijinudavilenaxutepikiv.pdfIn PDF document text
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a69908b2743b145edc7d26dd0dcbe4dc/zodamifixatiliwopipazotan.pdfIn PDF document text
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2105051906204915070x4vli.pdfIn PDF document text
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084b4691b987---1528236027.pdfIn PDF document text
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34b4416445---16042426118.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_off0000db64.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB64 | 10520 bytes |
SHA-256: dc9fa60fb0c5f2b37e0213eb4fb9c39541c8640e1316f13aad716915528021e6 |
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font_01_sfnt_off0000f35c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF35C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010b6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B6E | 16784 bytes |
SHA-256: 91b19cc8f8adf3139dbe9dbd07a066c3e7f5ec7b57d23f623b4e03b8c88a99ed |
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