MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded JavaScript and numerous external links, several of which point to compromised CMS uploads or are hosted on disposable domains, suggesting a phishing or malware distribution campaign. The primary attack vector appears to be a malicious attachment, likely delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9891
Heuristics 7
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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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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://elearning-chemistry.ro/userfiles/file/vuvebasegalaxozonu.pdf In PDF document text
- http://kapsalonvogue.nl/files/file/xukozix.pdfIn PDF document text
- http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/power.pdfIn PDF document text
- http://szkolaprywatnaleszno.pl/userfiles/file/34387413829.pdfIn PDF document text
- http://signaturecruise.com/js/ckfinder/userfiles/files/migepevubot.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/pgaat9e6u4kav0dn5trrutevjm/72939121327.pdfIn PDF document text
- http://esejsc.com/upload/files/lidokugarevetazir.pdfIn PDF document text
- http://www.humillacionyestrella.org/ckfinder/userfiles/files/garelojunudomonumefi.pdfIn PDF document text
- http://texmet.pl/userimages/file/vomatimabezixebikabo.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/b7aa33aeabe198888cff4e26d1ffbadf/3069723459.pdfIn PDF document text
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/ce5f5307b9124d066b285bcdff4ca678/63652853738.pdfIn PDF document text
- http://stlukesfp.org/ckfinder/userfiles/files/46874562687.pdfIn PDF document text
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/nr7hp27mktmfs1atilhr3toqgn/92434609269.pdfIn PDF document text
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c5580483d43---tegokare.pdfIn PDF document text
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087686c1248c---nawosazufeviwelosuwar.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/98993463136.pdfIn PDF document text
- http://mistral-paints.cz/userfiles/files/turapudaxidemejov.pdfIn PDF document text
- http://azbuka-d.ru/ckfinder/userfiles/files/61730734310.pdfIn PDF document text
- https://sailstudy.in/ckfinder/userfiles/files/24785814672.pdfIn PDF document text
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7ae94c8fc---kokukotug.pdfIn PDF document text
- https://irepairplus.nl/app/webroot/files/userfiles/files/43789289790.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160778a7940d41---90469314411.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7adb79c519---vamobuvokiwezorajane.pdfIn PDF document text
- http://gmei.lt/ckfinder/userfiles/files/62224854881.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6957eda51a---39288191901.pdfIn PDF document text
- http://interwork.sk/userfiles/file/87769528915.pdfIn PDF document text
- http://adabaskimerkezi.com/upload/file/75239746932.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=strategic+management+and+business+policy+10th+edition+pdfPDF 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_off000184fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x184FD | 18948 bytes |
SHA-256: 0ff567fcc64b0604220268663185b771f09e33601883d964f6773443beb5c9cb |
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font_01_sfnt_off0001b6e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B6E8 | 11672 bytes |
SHA-256: 43f3b3a07946101fabc84c2ecb28f262a6a6dabde64ccf2248c20cd6ca7955da |
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font_02_sfnt_off0001d213.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D213 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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