MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with heuristics indicating it functions as a link farm on compromised CMS uploads. The document body, though heavily obfuscated, suggests an invoice or payment lure, aligning with the SE_INVOICE_LURE heuristic. The embedded URLs point to various PDF files hosted on potentially compromised websites, likely serving as a distribution mechanism for further malicious content.
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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fd3a11b5b---kopeludeka.pdf
- https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/f9dd807c8849fa90bb34eb2965257d3a/33950367882.pdf
- http://chukysovin.com/img-svc/files/lozifokugarudugegijulux.pdf
- https://mttrasportisrl.it/dati/upload/file/36433098141.pdf
- https://majorsagilekvaros.hu/uploads/file/37223981779.pdf
- http://dges.in/userfiles/file/67854477868.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/451b1cc22faee3d32523d2ff4a20ec0d/474259348.pdf
- http://unnatiwelfareorganization.com/ckfinder/userfiles/files/gixelaturow.pdf
- http://ankaser.com/userfiles/file/guxuxonarevetefarofa.pdf
- http://www.jobsincrete.gr/images/_user_na/file/70234536390.pdf
- https://gachbinhduong.com/upload/file/duwupolafuwojuk.pdf
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/bb204eca2ad3b8fead3596b32ef6bf8b/xokobeveralafodakilegew.pdf
- http://gistfamilyreunion.com/clients/8/8c/8cbf0a40baaab9dd4734ff2cdbb1e120/File/fokukufalufuzujoxofiregix.pdf
- http://ropesadventure.com/d/files/sofipojulexibizaxefubuzad.pdf
- http://espacioschillout.es/images/admin/file/zodulewafugiwudegez.pdf
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/5a5890bf39c656c8446124076f84df58/57579219406.pdf
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ab166d09625---sovifoditarebozowenu.pdf
- https://myphambambi.com/webroot/img/files/lezepozubale.pdf
- https://angelsstaff.com/uploads/file/74515948996.pdf
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090cf8d68d86---zerofifi.pdf
- http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/46441810788.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=house+prices+up+or+down+2021
- 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_off0000f3ab.binb5bdfd225062ef20a16c8c7457266720476c25fb01b154e069134a02c4bde7bf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3AB | 17376 bytes |
font_01_sfnt_off000120d4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120D4 | 16792 bytes |
font_02_sfnt_off000138eb.binadc37c151169b6aed309e810c705471ca99e4c836b63e73746b49eea59bc8642 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138EB | 10672 bytes |
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