MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains multiple links to external websites, many of which are hosted on compromised WordPress installations or disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicate a pattern of hosting malicious content on these sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a second-stage payload via the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://crysiq.ru/uplcv?utm_term=giving+performance+reviews PDF link annotation
- https://dienlanhhonganh.com/images/pic/file/28014695091.pdfIn PDF document text
- https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/6be415440117ec0860fff4ff0440caf9/87235103507.pdfIn PDF document text
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9d805b762---pumubiwizi.pdfIn PDF document text
- https://angelsstaff.com/uploads/file/zovufiwisenawifabirud.pdfIn PDF document text
- https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/88712c8f280bdd133630da5907a226dd/fajexedafovitus.pdfIn PDF document text
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/ifspannbh270smalebgktbh821/30375350823.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5cc20558c---bodowejajevumajuxan.pdfIn PDF document text
- http://cs-web-design.de/ablage/userfiles/files/vutalu.pdfIn PDF document text
- http://misosmile.com/upload/editor/files/puzoxonibigivapesemipo.pdfIn PDF document text
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/74af9e372552ff8faa05d178a2d010b7/lividif.pdfIn PDF document text
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb876374f5---tilokujewinuxozosikat.pdfIn PDF document text
- http://cestovni-postylka.eu/userfiles/file/ziwovunu.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/l8fr6kdnhi0d68drgl0nt8o0ki/48299706135.pdfIn PDF document text
- http://aggengr.com/uploads/CMS/file/dazukosatasejumifiwe.pdfIn PDF document text
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/abi8f3oa7mrerpei7r09bqoghn/towuluxozokit.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fde6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDE6 | 5488 bytes |
SHA-256: 51404244ddf74c07ceb20c328d3267c8685eb5f23b10e043f01f35e3e82d83a2 |
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font_01_sfnt_off0001109b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1109B | 10764 bytes |
SHA-256: 26a7ae24e25f397abf39508b4d75792e47e9d13291b595f316463854a6219ad6 |
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