MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The presence of embedded JavaScript (T1059.007) and a large number of external URIs, many hosted on disposable domains, strongly suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment (T1566.001). The document body was unreadable, but the heuristics point to a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9909
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://mb-classic-service.de/userfiles/file/85912043906.pdf In PDF document text
- https://burragebrothers.com/demo/jolie/beta/userfiles/files/vifukofako.pdfIn PDF document text
- http://triple-a.co.th/ckfinder/userfiles/files/96481933879.pdfIn PDF document text
- http://01host.ru/userfiles/files/sebinegizezelibib.pdfIn PDF document text
- http://hodoan.net/userfiles/file/11577063355.pdfIn PDF document text
- http://ck-kutnahora.cz/gais/image/file/77958461781.pdfIn PDF document text
- http://studiotecnicomancini.eu/userfiles/files/vogowepubufogizomanujon.pdfIn PDF document text
- http://naoshima-habitant.com/images/blog/file/96039941935.pdfIn PDF document text
- https://edenestates.com/ckfinder/userfiles/files/2927645382.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131f6586d2cf---59712576125.pdfIn PDF document text
- http://faithleader.org/js/ckfinder/userfiles/files/56847918950.pdfIn PDF document text
- https://linhngapt.vn/upload/files/sototofova.pdfIn PDF document text
- http://www.egymast-segito.hu/uploaded/fck/file/25510182973.pdfIn PDF document text
- http://viorina-deko.com/images/file/58197648367.pdfIn PDF document text
- http://adveotec.com/img/file/3796388439.pdfIn PDF document text
- http://logenamerica.com/userfiles/file/kezujesunerosuzalufipuzim.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d27ca2b26d---xudovowitoze.pdfIn PDF document text
- https://stmarys-perthamboy.com/upload/File/54433735127.pdfIn PDF document text
- http://gruppocinofilomarsalese.com/userfiles/files/36025033111.pdfIn PDF document text
- http://gojjang.com/uploads/files/13211290050.pdfIn PDF document text
- https://dichvumayphoto.vn/webroot/img/files/gavuzap.pdfIn PDF document text
- https://robert-zauer.cz/userfiles/file/25655624075.pdfIn PDF document text
- http://unitekinfostructures.com/userfiles/file/98459108482.pdfIn PDF document text
- https://piphoto.tw/uploads/files/202109080518592207.pdfIn PDF document text
- https://horacebatten.com/ckfinder/userfiles/files/zezofomobejitarux.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/65196985321.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=the+best+file+manager+for+android+2020PDF 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_off0000bbb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBB3 | 11148 bytes |
SHA-256: 134cfe280418cb14babc369b913ad629e7d7c2277034bffa171639fc00f88fb4 |
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font_01_sfnt_off0000d55a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD55A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ed6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED6C | 16212 bytes |
SHA-256: 3bc0e8b7d91a5d73448b2770eb8b81d390f3d09e385506372a300cafe852cc37 |
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