MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various compromised websites and disposable domains, many of which host further PDF files. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics strongly suggests a phishing or malware distribution campaign. No scripts were extracted from this sample, but the overall structure points to a lure for downloading a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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 http://thuduchouse.vn/pics/file/15500975109.pdf In PDF document text
- http://epoptavky.com/is/images/FCKeditor/File/67136340970.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/vmesspagi5qmn092qcjuqbtdia/27726976469.pdfIn PDF document text
- http://dcbestwings.com/uploads/files/kipazom.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/fivegironover.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a1eba8a8f---nijemavapizatetonide.pdfIn PDF document text
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c633aea8ff---28662251328.pdfPDF link annotation
- http://bivalyracing.hu/files/file/toditeliw.pdfIn PDF document text
- https://www.syria-report.com/sites/all/libraries/ckfinder/userfiles/files/73294897440.pdfIn PDF document text
- http://theclubburger.com/uploads/files/62624840875.pdfIn PDF document text
- http://makesomenoise.hu/upload/file/99770368309.pdfIn PDF document text
- https://sangolongphuong.vn/longphuong/news/files/30991118666.pdfIn PDF document text
- http://avvocato-callegaro.it/public/file/7831472577.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/38am1pbg965klq9fpdatjohamt/jodafivukozakeko.pdfIn PDF document text
- http://phrabat.net/UserFiles/File/47574546164.pdfIn PDF document text
- http://elektro-galerie-hamburg.de/userfiles/file/xabip.pdfIn PDF document text
- http://zhongguohuachun.com/d/files/vuborulisegadipu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=igo+primo+nextgen+downloadPDF 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_off0000d53e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD53E | 19504 bytes |
SHA-256: f836fbe05acb88bfab23fa5c3abfc838616984bb0f47ff8ec11cc0e67107f72e |
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font_01_sfnt_off00010870.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10870 | 10704 bytes |
SHA-256: fe5a94d815e3bb75dfbc24c8669d0a85904b14ff146a325d0bacce290d318e5a |
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font_02_sfnt_off000120d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120D0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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