MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, contains references to 'Advent bible reading plan' and the wkhtmltopdf tool, suggesting a lure. Numerous embedded URLs point to compromised WordPress sites and other potentially disposable hosting, indicating a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://crysiq.ru/uplcv?utm_term=advent+bible+reading+plan PDF link annotation
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983dc89c892---tikofamejofodefitajob.pdfIn PDF document text
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba39a889f3---82788525080.pdfIn PDF document text
- http://instant-image.net/UserFiles/Site/File/91246260569.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073edfe73a22---28479342245.pdfIn PDF document text
- http://ikhmongol.mn/ckfinder/userfiles/files/71792945021.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/145e18c63028333c8c63779c9d80531b/34303121956.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/f3tgked0avs6g8oqe19850rb51/1382236879.pdfIn PDF document text
- https://www.myosiaffiliate.com/199trust/img/file/zinuladaterogidepi.pdfIn PDF document text
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/7kbm27pkqepsusnjrrqa6v8tdu/65521780590.pdfIn PDF document text
- http://wadirumshootingstars.com/userfiles/file/%5C/selirigisovovini.pdfIn PDF document text
- http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4959edb63---92568410865.pdfIn PDF document text
- http://imi.vc/upload/files/vobonidelegatapewiximut.pdfIn PDF document text
- http://baugeraeteverleih.de/benutzerdateien/vuzapu.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ib4gflfn56fb4rhkctl8uaga8g/bexilowesojixexuxe.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609467af9139d---84067512861.pdfIn PDF document text
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/fvg1fjlj8go4alhp1u425m8e9v/82144427804.pdfIn PDF document text
- http://interel-rus.ru/test/sites/default/files/file/xebigisifam.pdfIn PDF document text
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/24dcbbed0eb5fc76c41ae09b2ae9032a/vepejutidisuwu.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_off0000fa51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA51 | 5140 bytes |
SHA-256: f70a97e40dec14aca5e13ee6857c56a3d21947aaef8b35253d4cbf1eb41510a1 |
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font_01_sfnt_off00010bdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BDF | 10760 bytes |
SHA-256: 15f9afe547281d47c9f5c1094cdb462905e4e2ab4c42529b1c3aa8a6df3918a5 |
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