MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a link farm pointing to multiple PDF files hosted on various domains, some of which are compromised CMS uploads. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to mimic an invoice or payment request to entice users to click the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://jarosi.hu/files/file/97204193707.pdf In PDF document text
- https://atrax.hr/files/34953823577.pdfIn PDF document text
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/m9201mgejjom73ls7cdjl460lc/92161845400.pdfIn PDF document text
- https://hankilfood.com/upfile/files/87115304272.pdfIn PDF document text
- http://atomleasing.ru/media/File/witilemakaxibez.pdfIn PDF document text
- https://epiphanych.com/images/file/mosizu.pdfIn PDF document text
- http://abwmarlboropike.com/uploads/files/sanimozorul.pdfIn PDF document text
- https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/h3796kv1ntr7ckmmob6hk6m6h0/xodadid.pdfIn PDF document text
- https://a1-recruitment.fr/v2011/Files/fck_upload/file/41387468602.pdfIn PDF document text
- https://dagvandearchitectuur.be/_files/file/55150626797.pdfIn PDF document text
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/ea9da10f8852867dc2c68e9eb8964f71/14009358975.pdfIn PDF document text
- http://atsolution.org/userfiles/file/20210827202306683731079.pdfIn PDF document text
- http://hanilkwanla.com/uploads/files/80789617479.pdfIn PDF document text
- http://rilta.net/userfiles/files/timoxajipobakesuselabibor.pdfIn PDF document text
- http://studio-castiglioni.com/userfiles/files/zirabusodiwojoseda.pdfIn PDF document text
- http://otestmanager.org/club/data/userfiles/file/20210906145730.pdfIn PDF document text
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/0gi0lamj7jfoi48b3cbiia12vq/kojodejipekaxe.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=free+service+contract+template+pdfPDF link annotation
- 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_off0000ef86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF86 | 18056 bytes |
SHA-256: ad74e7c12eddea29c75ad9a3585c7acf5b2eff5eefc67dcf4830920056f44239 |
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font_01_sfnt_off00011dd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DD8 | 10824 bytes |
SHA-256: 08d315b075d2102813a28fe685cc12cf29b928569e911b8d2a3223d6e7b20d1d |
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font_02_sfnt_off000136d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136D5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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