MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content or phishing pages. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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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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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://queure.ru/uplcv?utm_term=iphone+hotspot+not+visible+on+laptop
- http://naosgym.com/userfiles/files/73597237920.pdf
- https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/17396396552.pdf
- http://eca.or.th/ckfinder/userfiles/files/didesovovopapijafa.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/nmnf5olnd4rmlmsnskbg8e5922/fizotugexepokegozudot.pdf
- http://elsekmont.eu/userfiles/file/2337122337.pdf
- http://budapesticukraszdak.hu/userfiles/files/69891504185.pdf
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/556576e2bd6cbf98187c4341052f1236/pozapiribafumiruluz.pdf
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/1sam83pugggadflffo45cd2qlv/22136325870.pdf
- https://hoangvan.vn/wp-content/uploads/files/nujununumizopijamovifu.pdf
- http://na-bytecek.cz/UserFiles/File/ruwor.pdf
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/0f09e925aac4dc71a4cc821ee8f8cbe5/48256561988.pdf
- http://rcsiprojectracker.com/userfiles/files/xojakiduvojanusupi.pdf
- http://atsolution.org/userfiles/file/20210901171004896096802.pdf
- http://grupopiscis.com/upload/files/ludanudamemafabem.pdf
- http://mamolenasnc.it/userfiles/files/50847452331.pdf
- http://www.rpv-drachten.nl/files/file/10099186286.pdf
- http://eskuvoiiranytu.hu/blog/file/bovuwofokitu.pdf
- http://kor-ra.ru/UserFiles/file/38940465444.pdf
- http://tichdiem.surecare.vn/uploads/userfiles/file/46186340141.pdf
- http://japhina.com/upload/file/63060632416.pdf
- https://mabuksusu2.com/contents/files/61321516272.pdf
- 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_off0000d102.binb4aba171855347f6fcae0a2fade5c8d97e84b2076f27ae61fbeaab91de62f1bd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD102 | 10404 bytes |
font_01_sfnt_off0000e84a.binb47ab2028a376de1cb0d8acc50ffedc3fb0972c11e397dce15c40e48c280182c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE84A | 17680 bytes |
font_02_sfnt_off00011600.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11600 | 16792 bytes |
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