MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external resources, many hosted on compromised websites or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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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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://chcial.ru/uplcv?utm_term=let%27s+talk+life+science+book+pdf+download PDF link annotation
- http://longarmquiltacademy.net/fckeditor/userfiles/file/pimerewibubalod.pdfIn PDF document text
- https://oddluzanie.net/userfiles/file/golirarufupu.pdfIn PDF document text
- http://short-story.ru/upload/file/23286724722.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/2d82c54ce421f3a74020d8485aa56b15/74523139928.pdfIn PDF document text
- https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/7b83fur1uagfle7tlmpl8m36s0/45665044844.pdfIn PDF document text
- https://debo-fit.be/userfiles/file///98170344591.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16116ac5036cea---nedaxadevesazufub.pdfIn PDF document text
- http://archerelectricsupply.com/userfiles/file/roruxoketori.pdfIn PDF document text
- https://idd.no/ckfinder/userfiles/files/57988222753.pdfIn PDF document text
- http://arohitourandtravels.com/userfiles/file/ketevopamotojimukolozi.pdfIn PDF document text
- http://medicamarsala.it/userfiles/files/nirof.pdfIn PDF document text
- http://geometrarontani.it/userfiles/files/xapuduzovasazuzuwuk.pdfIn PDF document text
- http://professional-tuner.at/uploaded/file/79894041225.pdfIn PDF document text
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/cb23c1d577e590210eb414eef267d640/84243521135.pdfIn PDF document text
- https://mkycc4.com/kycc4.com/userfiles/files/dewesudigufemonijokanas.pdfIn PDF document text
- https://muacash.com/webroot/img/files/lodinatof.pdfIn PDF document text
- http://kingcraftviet.com/uploads/ckfinder/files/73452788223.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160d2755bef7f1---72738420026.pdfIn PDF document text
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/7k8b94d4l9n62klq5o78vfq515/69134155063.pdfIn PDF document text
- http://bearings-home.com/userfiles/file/betukaruviboxaxupabiwusit.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_off0000dcb6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCB6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f4cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4CD | 10820 bytes |
SHA-256: dbc07185a8a205a3282be678940db17b05ca3df5aea752226ed645e52bf7e116 |
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font_02_sfnt_off00010dc5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DC5 | 18972 bytes |
SHA-256: 4bbe508e73d1c6cf72889eccae08bf26d8655fa4446c31e909709b2748ac98a7 |
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