MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to distribute malicious files. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://nomylo.ru/uplcv?utm_term=android+play+store+settings PDF link annotation
- http://impex-italia.it/userfiles/files/81055401753.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/9deb84144fff0be311cc42e603062bf1/fufogazixatetudexom.pdfIn PDF document text
- http://salamino.pl/userfiles/file/3988823022.pdfIn PDF document text
- http://elmbbq.com/uploads/files/xodupu.pdfIn PDF document text
- https://zzhqhi.com/d/files/mufegiwemele.pdfIn PDF document text
- http://royalgroup.at/tmp/24714090250.pdfIn PDF document text
- https://xn--80aggmy8c6c.net/UserFiles/File/sijugewonaf.pdfIn PDF document text
- https://eyetracking.pl/userfiles/file/67507743643.pdfIn PDF document text
- http://graciaindoutama.com/kingkong/userfiles/files/pidusenugex.pdfIn PDF document text
- http://vietsinphar.com/uploads/files/56343283582.pdfIn PDF document text
- http://medica-brno.com/files/70772448913.pdfIn PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614562f02bc3a.pdfIn PDF document text
- http://fcraregistration.com/UploadedData/file/nukunubedodibimadeboba.pdfIn PDF document text
- http://alpha-cp.com/userfiles/file/81698917939.pdfIn PDF document text
- http://chaodontuonglai.vn/uploads/ck_upload/files/87895929611.pdfIn PDF document text
- http://fencefactoryny.com/userfiles/file/kukofoduzuxaduguxotud.pdfIn PDF document text
- http://client.diffuse.info/files/28696617242.pdfIn PDF document text
- http://fisioterapiasuzzara.it/userfiles/files/3155023381.pdfIn PDF document text
- http://dawahcity.com/userfiles/file/32943974811.pdfIn PDF document text
- http://bebsulmare.com/userfiles/files/11483190922.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/2d1sbp0plu9cvk2ascs1b1o9uu/limegorule.pdfIn PDF document text
- http://kxxbs.com/uploadfiles/file/a/nujalinegesiwezifuvo.pdfIn PDF document text
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135b77fa7e41---bedokowukiwuri.pdfIn PDF document text
- http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/54016832670.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_off0000db1d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB1D | 17396 bytes |
SHA-256: 9716b6db284241301aa184196d7197ee0999ad74512a40aefbb311b8b64a54e1 |
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font_01_sfnt_off00010823.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10823 | 10664 bytes |
SHA-256: 7b5176deb43452384545e30a8c4bff02d04fc2aac15bbd05a962e2bdad408474 |
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font_02_sfnt_off00012083.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12083 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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