MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It functions as a link farm, directing users to various external URLs, some hosted on compromised CMS platforms. The presence of numerous URLs, many with 'utm_term' parameters, suggests an attempt to distribute phishing content or download further malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://synerhu.ru/uplcv?utm_term=remote+system+monitor+pro+apk PDF link annotation
- https://fancybox.pamlskovnik.cz/ckfinder/userfiles/files/99404097180.pdfIn PDF document text
- https://h16hr15k-h19hr37urn.com/contents/files/kokunijufuxurifitenape.pdfIn PDF document text
- https://gruntbudowa.pl/files/file/kebawewomolidu.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161377efb9bdd5---kixisevuxegatapu.pdfIn PDF document text
- http://szm.hu/userfiles/file/15831041865.pdfIn PDF document text
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/2qo7c09g7rtah2pa15s86qfdvm/60007943259.pdfIn PDF document text
- http://benthanhsgfarm.net/images/uploads/files/fopatade.pdfIn PDF document text
- http://drxzhang.com/userfiles/file/durudatovatibotaxaga.pdfIn PDF document text
- http://tatishev.ru/admin/ckfinder/userfiles/files/revogitimozoro.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/aed017e226785803086c0939f4e1205a/7924745266.pdfIn PDF document text
- http://www.sctiec.com/up_files/FCK/file/roletuvuvisuredexipaxu.pdfIn PDF document text
- http://delfosventures.net/userfiles/files/57655376332.pdfIn PDF document text
- https://tpk-m.ru/files/file/38857024281.pdfIn PDF document text
- https://cvsc.co/userfiles/file/49473230918.pdfIn PDF document text
- https://daynexweb.com/upload/ckfinder/files/29901029825.pdfIn PDF document text
- http://brandiassociati.it/userfiles/file/neladatelewevilesuro.pdfIn PDF document text
- http://dade666.com/userfiles/202109file/2021090201271370554.pdfIn PDF document text
- http://fijiembajak.com/uploads/ck_uploads/files/74912711343.pdfIn PDF document text
- http://lnshiyue.com/userfiles/file/20210907234921_1369583341.pdfIn PDF document text
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/27fe771a73560a4c50873f91a3093366/92299185740.pdfIn PDF document text
- http://mikomisushiwc.com/uploads/files/52346311041.pdfIn PDF document text
- http://ufnk.fr/app/webroot/files/file/94436528242.pdfIn PDF document text
- http://caratow.nl/userfiles/file/14076144002.pdfIn PDF document text
- http://vtvxm.vn/userfiles/file/ravutupodu.pdfIn PDF document text
- https://eobliecky.sk/userfiles/file/wiretidisusamanu.pdfIn 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://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_off0000bb2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB2C | 16756 bytes |
SHA-256: 0b565f981863af83cfc02f17da74313839bd8222d1fb4b563f432f2894103ec4 |
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font_01_sfnt_off0000e67e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE67E | 10616 bytes |
SHA-256: c804e83f23bed758308cc3ee701c20101ece66ac2cc23d48c403da5d2e148c00 |
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font_02_sfnt_off0000fed3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFED3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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