MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. While no scripts were explicitly extracted, the nature of the links suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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 http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5f44c3010---zaverav.pdf
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2121c9210---fegiwoxug.pdf
- http://kursadowicz.pl/Upload/file/gudikule.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba294eef3d7---xutabenuxu.pdf
- http://mcutech.net/upload/2021/07/file/16255327961223657624.pdf
- https://europawindow.com/app/webroot/img/main_content/files/16664635617.pdf
- http://spakimthi.com/upload/files/novenesafisopirupetug.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/12ff8a5322a7e3a676c033bb88c957ca/vevebabojibexalimipozeni.pdf
- http://fittbike.hu/files/file/34367718232.pdf
- http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/4687366041.pdf
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160863d77598bc---81756171856.pdf
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/89f4303852a7a92ca0fb2642974361e2/77354071708.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cecadeef5---42710229656.pdf
- http://postelezmasivu-brno.com/ckfinder/userfiles/files/68782122465.pdf
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/85969377278.pdf
- https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/bd4e69433f1ad331439ce14062e6db43/1147606641.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6cd5ef37a---27932529093.pdf
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/0182307348a9a80ece7e9f66e288b354/loxujamotizevuf.pdf
- https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/74645409112.pdf
- http://vencedor.coop/images/admin/file/37569018810.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c68a5f0bb---68139835984.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=should+i+put+job+shadowing+on+my+resume
- 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_off0000f62e.binb8c0f63b9c41d9deb6fb991606a30e5cabf138dd7db14d1cc6ba6ef0361b57e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF62E | 17976 bytes |
font_01_sfnt_off000123ef.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123EF | 16792 bytes |
font_02_sfnt_off00013c06.bin191bf493f84e8978441f70ee328db114bf56ab5c9d39d49df710ac529c0efbc8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C06 | 11484 bytes |
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