MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as a phishing trojan. It contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users. The presence of multiple links to compromised WordPress sites and disposable hosting suggests a link farm designed to obscure the true destination or host malicious files. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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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://xn--3bsx3iw22bmot.com/filespath/files/20210912085242.pdf In PDF document text
- http://gildiamasterov.ru/userfiles/file/jojuwibedipimadekutaboku.pdfIn PDF document text
- http://huspanda.com/data/ckfinder/files/37312635925.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161336567e81c3---25460831695.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161361dd9d07db---popeso.pdfIn PDF document text
- http://sdds.be/userfiles/file/josareradinufowabejoja.pdfIn PDF document text
- http://handinks.com/ckfinder/images_store/files/17199010018.pdfIn PDF document text
- http://matkinhantai.com/luutru/files/60753092581.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16135af2743351---sipumevo.pdfIn PDF document text
- https://limblength-sldf.com/userfiles/file/nigisalekubimubodiz.pdfIn PDF document text
- http://melodylavernebettencourt.com/media/file/bemuvakizuxoz.pdfIn PDF document text
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/9a3d491c4a657baec1f81040b7dacedb/ralefopenifozepaneruliwof.pdfIn PDF document text
- https://bluza-shop.ru/content/File/gotajerazipukusul.pdfIn PDF document text
- https://maggies-handmade.com/UserFiles/files/jofukakosekuvunegebaba.pdfIn PDF document text
- http://koreabulk.net/userData/board/file/makutabijebafurid.pdfIn PDF document text
- http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/31404833045.pdfIn PDF document text
- http://www.ujepites.hu/userfiles/files/walomokugajax.pdfIn PDF document text
- http://webinaris.net/ckfinder/userfiles/publics/files/befezufijesusebixaf.pdfIn PDF document text
- http://thibangoto.com/app/webroot/uploads/files/tizivogivemepowaloj.pdfIn PDF document text
- http://wimborst-ceramics.nl/ckeditor/ckfinder/userfiles/files/vofid.pdfIn PDF document text
- https://kotata-zlin.cz/obr/clanky/file/4791416076.pdfIn PDF document text
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e7afb13243---42205247888.pdfIn PDF document text
- https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/fifufojuvit.pdfIn PDF document text
- http://avvocatogiuliani.it/userfiles/files/jofoluwimalesovavijexosix.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=can+i+use+my+phone+as+a+computer+mousePDF 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_off0000d588.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD588 | 19004 bytes |
SHA-256: db07208f2990f69107e3a4cc622c0603457dd0f9ae65aaf2f3bacfc530cecbc4 |
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font_01_sfnt_off0001061c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1061C | 10836 bytes |
SHA-256: 878e234cd81affa3a0f042c1f40e3a45edc40429aa7ef5cee3c909aaae5020fd |
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font_02_sfnt_off00011f01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F01 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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