MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of phishing and callback lures. It contains numerous embedded URLs, suggesting it's part of a link farm designed to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate an attempt to exploit users through deceptive content, likely leading to a phishing or malware download scenario.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://oniceh.ru/uplcv?utm_term=best+pdf+reader+for+android+2021 PDF link annotation
- http://www.centralperdana.com/file/43474036257.pdfIn PDF document text
- https://autopits-directo.migrupoq.com/ckfinder/userfiles/files/31024518796.pdfIn PDF document text
- https://escaletravel.com/userfiles/files/detuxigegugamo.pdfIn PDF document text
- http://naturalfurnish.com/userfiles/file/8107069561.pdfIn PDF document text
- http://ckudzcssffhhj.handysociality.com/upload/files/tiladeke.pdfIn PDF document text
- http://2015.letnifestiwal.pl/ckfinder/userfiles/files/41505619215.pdfIn PDF document text
- http://bjerkelunden.org/content/files/userfiles/file///boneporene.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/lv4hh0vaskqi1v1c3tg4ju445j/62358186867.pdfIn PDF document text
- http://grandioso.asia/editor_upload_image/file/34484536723.pdfIn PDF document text
- http://polimak.pl/userfiles/file/69732127416.pdfIn PDF document text
- https://cfaegaianascente.pt/portal/userfiles/files/fanokoselogun.pdfIn PDF document text
- http://kiuruvedenlukio.fi/tiedostot/file/13680181990.pdfIn PDF document text
- http://www.sec-ollivier-associes.fr/www/upload/file/gipiwuxamodopotutumito.pdfIn PDF document text
- http://karcannakliyat.com/userfiles/file/52557984996.pdfIn PDF document text
- https://lensprovn.com/ckfinder/userfiles/files/wagififufobadafusitififi.pdfIn PDF document text
- http://lightofislamonair.org/uploads/files/55588503940.pdfIn PDF document text
- http://suncitygroup.ir/basefile/suncitygroupir/files/gexakaxupuweponokofefap.pdfIn PDF document text
- https://armenia4d.com/contents/files/99220131125.pdfIn PDF document text
- https://sofahatinh.com/upload/files/wowezaxedamutefaxe.pdfIn PDF document text
- http://asu78.ru/userfiles/file/jupojesopawobivafo.pdfIn PDF document text
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16139be0d8ab9c---begalomunixupubif.pdfIn PDF document text
- https://e-ssuances.com/ckfinder/userfiles/files/todaxavojexatibaxevaregob.pdfIn PDF document text
- https://ddnepal.com/assets/userfiles/files/xevomawefubagemazasisam.pdfIn PDF document text
- http://greenflameenergy.com/userfiles/file/89335238476.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_off0000f8a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8A6 | 17888 bytes |
SHA-256: 37dec17089738d448990f320fc3331bb1eddaea08b8dc052324018f02d1ba6a3 |
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font_01_sfnt_off0001279b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1279B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013fb2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FB2 | 10792 bytes |
SHA-256: 2f4176272c9850eba83f5b43a4698ceb2e073463fbdbc642c239790f5a441380 |
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