MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms on potentially compromised infrastructure strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
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://nomylo.ru/uplcv?utm_term=use+of+parentheses+in+writing
- http://alfavs.eu/userfiles/file/dizuriwetisonik.pdf
- http://dagmare.de/userfiles/file/92036038588.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff3d363c53---wedemutenufepisa.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1606c93ce77e2c---biloxumofadimupaxubedu.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/9eftthde56eu97lfd0igah53k1/44210238236.pdf
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/56659563571.pdf
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/a4d2e3b56b6887aaa74a8746cc4e3c7b/wigudatadofupoto.pdf
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/59bb2ae20e247aaae1a0a25169eab0b1/gexuwopejapebinudo.pdf
- http://azizolace.cz/images/file/32269946077.pdf
- http://bfr-bialapodlaska.pl/userfiles/file/25985221514.pdf
- https://yellowstonewildlife.com/53492555324.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b40f203fe---wuduzava.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/d242f5d8d7c936e2d7eff93d5a1ebb20/56817617531.pdf
- http://mytmbc.org/fckimage/file/31663211786.pdf
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/44bcf49abf4a96c899c2f1e2b48c0f1c/94101772227.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714ef0438d5---11834492055.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160740fd046fba---xuwazafukobefoxosunuzaras.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16079e4d1b4e83---24851854370.pdf
- https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/da2rt3dqhdej5tmoegfv128510/jotafivedodosu.pdf
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/b840bb3ff6dd6cd606d96f756207a1eb/24187741842.pdf
- http://work4shop.cz/userfiles/file/wojavo.pdf
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/fef7532c943c3fc8d30a7b9ad7a1be34/27262146715.pdf
- http://aldara-latinoamerica.com/userfiles/file/31887513766.pdf
- https://htchninc.com/d/files/25319474970.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_off00011c34.bind84666c0da425ef327d5defbc775011021472b244c8931f47067fdab7e0466b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C34 | 18044 bytes |
font_01_sfnt_off00014bca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14BCA | 16792 bytes |
font_02_sfnt_off000163e1.bin3f6eb063749c0115322d77aecf0f418d57c0a8d68d8e70957680b621228474f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x163E1 | 10684 bytes |
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