MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document exhibits characteristics of a callback phishing or tech-support scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous embedded URLs pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to deliver a payload or redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://coretry.ru/uplcv?utm_term=hinge+axis+facebow
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2a803be1fc---69901512636.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/fb185ac55953087e35c0f5aa9bd4b5a7/nabuwij.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81f6475737---99277761833.pdf
- https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160733cb27cba4---timajoj.pdf
- http://toyteepee.com/uploadfiles/file/210520165425811515od0pgd.pdf
- https://rcot.org/userfiles/file/maminowiravexe.pdf
- http://fogathajtohirek.hu/fckfiles/file/78608497974.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160828edb2aff4---40255518973.pdf
- http://kingalbertltd.com/uploadedfiles/file/60032841987.pdf
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6056e60f0---pimuzotije.pdf
- http://camonetinternational.com/files/file/xulubotusijumares.pdf
- https://fontaine-eva.fr/userfiles/files/87020944012.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/234c1f98c98dc9e190bfb476eba6a576/guwonugusodorugofemuka.pdf
- http://flygarfield.net/userfiles/file/86954915073.pdf
- https://baxsporthorses.nl/userfiles/file/rovozadixomunaju.pdf
- https://alkalacarservice.com/public_html/userfiles/file/76372620902.pdf
- https://circolodelpistone.ch/userfiles/file/47679274696.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c0317e32---zadavewojasi.pdf
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c96bb2b0212---toweralamelapenaso.pdf
- http://hzdshg.com/images/upload/File/42846258498.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1fbad3fd0---revopedupifegog.pdf
- 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_off0000f8f7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8F7 | 16792 bytes |
font_01_sfnt_off00011109.bin20f01b41615ad502973d8f850ad220db81be5bce581a72db4ca8bbab4028eae0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11109 | 17724 bytes |
font_02_sfnt_off00013fdc.bincc8ae478757aab28a11d18885bcd8d9b6bf7c61f026b04195013bc409582c411 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FDC | 10584 bytes |
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