MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
This PDF was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The heuristics indicate it functions as a phishing lure, specifically using invoice or payment-related language to trick the user. The document contains numerous embedded URLs, many of which point to suspicious PDF files, suggesting a link farm or redirection mechanism to deliver the malicious payload. No scripts were extracted, but the overall pattern points to a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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 http://klaaswester.nl/img/file/91264472854.pdf In PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1ebbb3685.pdfIn PDF document text
- http://hamkr.com/userData/board/file/rupijo.pdfIn PDF document text
- http://aostavet.it/userfiles/files/kizexonamatum.pdfIn PDF document text
- http://www.corazondelsol.es/ckfinder/userfiles/files/94391403090.pdfIn PDF document text
- http://fukaofoods.tw/uploads/files/202109120936383537.pdfIn PDF document text
- https://hagakure.by/upload/editor/files/97720138842.pdfIn PDF document text
- https://iwanbim.com/userfiles/files/lenitemuzubitozoxuwagegot.pdfIn PDF document text
- http://lesen-und-schenken.de/userfiles/files/futuzafarusa.pdfIn PDF document text
- http://www.ecvbrass.ch/user/web/file/94945229679.pdfIn PDF document text
- http://architettodrabeni.it/userfiles/files/dulalevo.pdfIn PDF document text
- http://zhymwz.com/upfile/file/31851836139.pdfIn PDF document text
- http://artgraf24.pl/userfiles/file/86683590569.pdfIn PDF document text
- http://wx-bm.cn/upload/ckimg/files/202109101556208525.pdfIn PDF document text
- http://kubkao-kubpla.com/userfiles/files/bijope.pdfIn PDF document text
- http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/44487835898.pdfIn PDF document text
- https://guclupin.com/calisma2/files/uploads/tuwoteve.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/75166801570.pdfIn PDF document text
- http://faisaltowel.com/survey/userfiles/files/nofemuligimapidororim.pdfIn PDF document text
- https://amrapalispot.com/userfiles/file/mowewejiva.pdfIn PDF document text
- http://lexxyin.net/files/fckeditor/file/82504665580.pdfIn PDF document text
- http://www.jucadent.es/ckfinder/userfiles/files/34189034456.pdfIn PDF document text
- http://ruizhishengwu.com/uploadfiles/file/210632556895.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=facturacion+oxxo+pdfPDF link annotation
- 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_off0000d216.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD216 | 10444 bytes |
SHA-256: 54055aaf2aa941a959401e0808aa5d8e280665d28946f38641d6f2f1fb800ffa |
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font_01_sfnt_off0000e9ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9EA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000101fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101FC | 17576 bytes |
SHA-256: 588c0d691a4eaf1062b75c364ecd5eaac9f94fe7cba7e11230b9ec05d304fe60 |
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