MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, suggesting a phishing or malware distribution campaign. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically flags this behavior. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 5
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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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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=quadratic+calculator+solve+for+x PDF link annotation
- http://woodwork.pl/ubezpiecz/obrazy/file/7717000916.pdfIn PDF document text
- https://www.newhorizonscrisiscenter.org/ckfinder/userfiles/files/penapeluzene.pdfIn PDF document text
- http://selidbe-beograd.info/files/75347568271.pdfIn PDF document text
- http://begues.mobi/userfiles/file/vujesajudojokidolilunixiv.pdfIn PDF document text
- https://ahl2005.com/ckfinder/userfiles/files/jugixifak.pdfIn PDF document text
- https://lean-ds.com/upload/editor/file/xexon.pdfIn PDF document text
- https://fertilizerproductionprocess.com/d/files/64928861815.pdfIn PDF document text
- http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/tesaroxuranaxizovedaz.pdfIn PDF document text
- http://lifeisartfoundation.org/sites/default/files/images/userfiles/file/63415258656.pdfIn PDF document text
- http://alarcon-v.com/editor_upload_image/file/vivaw.pdfIn PDF document text
- http://globalbando.com/DATA/upload/files/202109082005154100.pdfIn PDF document text
- http://teleinwestor.pl/userfiles/file/61100718021.pdfIn PDF document text
- http://topimmigrationlawyer.org/ckfinder/userfiles/files/wajefukimuxufikeberiso.pdfIn PDF document text
- http://yibetter.com/data/files/23692611847.pdfIn PDF document text
- https://mekongtransport.com/upload/userfiles/files/mesetufe.pdfIn PDF document text
- http://ckud.handysociality.com/upload/files/95339713732.pdfIn PDF document text
- http://adamlegal.com/userfiles/file/selerigipotisaga.pdfIn PDF document text
- https://baxsporthorses.com/userfiles/file/4563937183.pdfIn PDF document text
- https://ubranni.com/uploader/files/52854619352.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/161307e09b7965---58126551571.pdfIn PDF document text
- http://www.bc-arman.kz/ckfinder/userfiles/files/76831237794.pdfIn PDF document text
- https://kmedebiyatgunleri.com/ckfinder/userfiles/files/vadax.pdfIn PDF document text
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613244cdd6346---rozarasanotalamuritemos.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_off0000c212.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC212 | 10692 bytes |
SHA-256: c53071038172d70fd7de66f5d95bb65b5e280c79b1852ad33e54d4daa491042e |
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font_01_sfnt_off0000dadf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDADF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f2f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2F1 | 21956 bytes |
SHA-256: a6f1c9ec9ba87932f612b8dc23576d29ce2e4df9f708afc5b0bb782bc1e6c020 |
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