MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. Heuristics reveal it functions as a link farm, directing users to compromised WordPress uploads and disposable hosting sites, likely to facilitate credential harvesting or malware delivery. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://irlanc.ru/uplcv?utm_term=icloud+emails+on+android PDF link annotation
- http://pokwuttibut.com/file_media/file_image/file/70777074148.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614faeb33dec3---32034410590.pdfIn PDF document text
- http://csc0898.com/userfiles/file/20210902182258_4clawd.pdfIn PDF document text
- https://horgaszvelem.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/4247325190.pdfIn PDF document text
- http://artpolinakuzina.ru/pict/file/zufew.pdfIn PDF document text
- http://francescofesta.it/userfiles/files/7772293645.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141e5a426d82---dutuvuv.pdfIn PDF document text
- https://andhimazhai.com/images/files/77731724013.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16145b95f8db35---80069177722.pdfIn PDF document text
- http://highlevel.pl/userfiles/file/xibezerosonivigapi.pdfIn PDF document text
- http://guojingmall.com/userfiles/file///74143837776.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/6bf4499aec3121327c795a9910fccd9a/44929228542.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161341b6bb66cd---xesamexefubalu.pdfIn PDF document text
- http://cokhitienvuong.com/uploads/files/12399436220.pdfIn PDF document text
- http://pngroup.pl/ckfinder/userfiles/files/reginegadipenugizegora.pdfIn PDF document text
- https://cncostruzioni.com/userfiles/file/10023731919.pdfIn PDF document text
- http://noithatmyhome.com/img/files/88132968931.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/jixesadiniliriju.pdfIn PDF document text
- http://sapaelitehotel.com/webroot/img/files/wikiwepof.pdfIn PDF document text
- http://szcftz.com/upload/vovalakefodumotupasuse.pdfIn PDF document text
- http://bilmatbasim.com/userfiles/file/libinagoxesuditi.pdfIn PDF document text
- https://svarovanijelinek.cz/ckfinder/userfiles/files/piselalijubamudazosaf.pdfIn PDF document text
- https://wickedcheesy.com/images/file/vereduxafelebakojex.pdfIn 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_off0000b2aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2AA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cabc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCABC | 17332 bytes |
SHA-256: 5f8de041f728847beaf53df74712e1dd9cc7328f98cbecbf74285f82aa717264 |
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font_02_sfnt_off0000f6ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6CE | 10484 bytes |
SHA-256: 1ed2fafeae52b3492d21b9d6183e3a9b7f24ddb99ca61a1f84e6c656fb12d7fe |
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