MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 https://chcial.ru/uplcv?utm_term=propagating+succulents+from+cuttings PDF link annotation
- http://www.europesolidaire.eu/userfiles/files/43804058.pdfIn PDF document text
- http://weingut-suppan.at/files/fovupevodikiwaxorim.pdfIn PDF document text
- https://yesilkoyluleriz.biz/resimler/files/79436764184.pdfIn PDF document text
- https://gizaviation.com/uploads/files/vegal.pdfIn PDF document text
- http://zhuoer.ltd/userfiles/file/28063951194.pdfIn PDF document text
- https://valenciamaids.com/userfiles/files/9446651160.pdfIn PDF document text
- http://pc580.cn/upload_fck/file/2021-9-25/20210925062511214108.pdfIn PDF document text
- https://officialbacknumber.com/editor_up/9366312885.pdfIn PDF document text
- https://oklogistic.lv/upload/file/milalo.pdfIn PDF document text
- https://ixiu-23.com/uploads/files/202110061457477824.pdfIn PDF document text
- http://adm.stikom-db.ac.id/js/uploads/files/venizupajonametojiwetija.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0bdc81e74---solom.pdfIn PDF document text
- http://krasneclanky.cz/uploads/fimaboti.pdfIn PDF document text
- http://papianiarch.it/userfiles/files/7368192690.pdfIn PDF document text
- http://xn--80akoseq9f.xn--p1ai/userfiles/file/wimasejinivupevuxogivawe.pdfIn PDF document text
- http://cjmfgx.morefriendship.com/upload/files/gibogadururutozuloxojeje.pdfIn PDF document text
- http://bastola.org/userfiles/file/milokorufim.pdfIn PDF document text
- http://go-pxl.com/uploads/files/91988061733.pdfIn PDF document text
- http://jadeite.ru/images/file/99413753320.pdfIn PDF document text
- http://sk-uralstroy.ru/uploads/files/rojoxedasumuzixa.pdfIn PDF document text
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/5b0392da65983bf3c5611b8061f6a557/7497841662.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614b6449cce4f---81109645526.pdfIn PDF document text
- https://www.thc.gda.pl/ckfinder/userfiles/files/lujunajevus.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_off0000c093.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC093 | 17952 bytes |
SHA-256: f8a3006730de7902f1daab8f4bbf2855184245b9747f0521a8e134725732198c |
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font_01_sfnt_off0000eec5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEC5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000106dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106DC | 10924 bytes |
SHA-256: 2557b726e597d52af9b0e353ba64b70c3537af2537d0061ba28bb43e9620298c |
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