MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a significant number of links to other PDF files hosted on various domains, many of which appear to be compromised or disposable. The presence of embedded JavaScript and a high ML classifier score, combined with ClamAV detection as a phishing trojan, strongly suggests a malicious intent to redirect users to malicious content. The link farm pattern is indicative of an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://gioiacompany.net/images/upload/file/29540817567.pdf In PDF document text
- http://distant-property.ru/fck_editor_files/files/zububitufedajawoxez.pdfIn PDF document text
- http://www.scea.edu.mn/ckfinder/userfiles/files/58781689242.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/77159318306.pdfIn PDF document text
- http://ps-chiptuning.hu/userfiles/files/venovijiwigo.pdfIn PDF document text
- https://biogenetixpharma.com/ci/userfiles/files/52366739799.pdfIn PDF document text
- http://rakkhunnursinghome.com/user_img/files/43955193268.pdfIn PDF document text
- http://docando.es/js/ckfinder/userfiles/files/33249860690.pdfIn PDF document text
- http://www.motionmantra.com/userfiles/files/73665275731.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/9e29186c2c31a8c46d17d5eb3986d577/nexitajagipawibasigexumo.pdfIn PDF document text
- https://www.mds-horizons.com/upload/files/24112944987.pdfIn PDF document text
- https://alistairmills.com/ckfinder/userfiles/files/27895865439.pdfIn PDF document text
- https://clic-essc.ch/ck/ckfinder/userfiles/files/56111141673.pdfIn PDF document text
- https://oreopay58.com/ckfinder/userfiles/files/55940753621.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/cs2ul7jl9hect6ta4kd78clj06/guroki.pdfIn PDF document text
- http://qataminational.com/uploaded_files/userfiles/files/govasopog.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16143765da13ab---33764683250.pdfIn PDF document text
- http://www.annaleehuber.com/content_files/file/1242330025.pdfIn PDF document text
- http://bettynblue.com/upload/fck_img/20210908/file/febizikerimagosisejipavom.pdfIn PDF document text
- http://qhchemicalsfeed.com/upload/files/nosogidagalatenubixu.pdfIn PDF document text
- http://bestapp4u.com/admin/uploadedfiles/file/dirutixulesuvidujezat.pdfIn PDF document text
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/ff6857a756339782663cbf0ab9e23df4/82155103802.pdfIn PDF document text
- http://flapboxes.com/userfiles/files/2983805661.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=shottas+vf+streamingPDF 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_off0000dd20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD20 | 10756 bytes |
SHA-256: 9d7e3694a56d763b336cbd1f58342e5fb9c7f5a2207931c70a548464bba3e3c7 |
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font_01_sfnt_off0000f5c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C0 | 20200 bytes |
SHA-256: 55a264623a316070c4a40f76d0a9eeefc994d874764100024e5e74350c5b1f5f |
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font_02_sfnt_off00012a90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A90 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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