MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. No scripts were extracted from this sample, but the extensive use of external links suggests a phishing or spam campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://pistant.ru/uplcv?utm_term=sphincter+at+top+of+stomach PDF link annotation
- http://xn--3e0b556bhrbowi6undva.com/ckupload/files/rajivusoni.pdfIn PDF document text
- http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161414d6de131a---jomopoli.pdfIn PDF document text
- http://outspokenholland.com/userfiles/fckFile/20210906014943.pdfIn PDF document text
- https://leo.tw/upload/ckeditor/files/somutabugabotererelalu.pdfIn PDF document text
- https://www.luxboss.com/ckfinder/userfiles/files/95614666726.pdfIn PDF document text
- http://belv.ru/userfiles/file/1120393002.pdfIn PDF document text
- https://k-barrierfree.com/FileData/ckfinder/files/20210907_BBA87A935274E1A8.pdfIn PDF document text
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/6aa5d5f6e1828ce61a638e22650515ab/dekijutirexavomosi.pdfIn PDF document text
- https://at1apigroup3.com/contents/files/20033850794.pdfIn PDF document text
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/2d444b2d981c9942908d22c45d6738eb/wogalepikonaz.pdfIn PDF document text
- http://candleelectricals.com/uploaded_files/userfiles/files/tubelitebofod.pdfIn PDF document text
- http://townofwinslowin.com/flash/townofwinslowin.com/file/41617035418.pdfIn PDF document text
- http://hebakotb.net/userfiles/file/56620997248.pdfIn PDF document text
- http://sunmoon-glory.com/web/upload/files/67819528624.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/rakitaxobef.pdfIn PDF document text
- https://tenutaedone.com/filesUploads/file/bajug.pdfIn PDF document text
- http://tfforming.ru/d/files/nuduxudegoxalisusi.pdfIn PDF document text
- https://radmangroup-ye.com/rgfiles/file/31367522378.pdfIn PDF document text
- http://hijoin.hu/editor_up/xatodebisefofotakax.pdfIn PDF document text
- http://chiangmai-clean.com/user_img/files/8080246549.pdfIn PDF document text
- https://cowik.pl/upload/36486068983.pdfIn PDF document text
- http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/bimamumede.pdfIn PDF document text
- http://sumbulefendiegitimvakfi.com/resimler/files/75788850867.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_off0000bd5b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD5B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d56d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD56D | 16456 bytes |
SHA-256: c410c20fcdb8257acda23af5210480fef59561ef6205842ee28e62ce5abf3487 |
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font_02_sfnt_off0000ffb2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFB2 | 10776 bytes |
SHA-256: a247ceef5dc0c1be8a013c6c13ccfe165c072304079e8188d9aa0bf8c8b48788 |
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