MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to potentially compromised WordPress sites or other unknown hosts. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis suggest an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 6
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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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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://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/6fec7a657f90b8e52063507e48e6bf71/movubi.pdf In PDF document text
- http://bogelaipigeon.com/upload/file/kupok.pdfIn PDF document text
- http://bigcool.net/webroot/img/files/63943991426.pdfIn PDF document text
- http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/vawidonutuxanubujudat.pdfIn PDF document text
- https://easypayindia.in/userfiles/file/vamufajuduromixefep.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/230355385806.pdfIn PDF document text
- https://108pizza.pl/uploads/userfiles/files/xaxulitipa.pdfIn PDF document text
- https://linhquan-group.com/upload/ck/files/78910853358.pdfIn PDF document text
- https://floridainvestment.cz/files/file/fojenoworajevize.pdfIn PDF document text
- https://menlopark.com/wysiwygfiles/file/82489582563.pdfIn PDF document text
- http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/jutugusudojunuvalu.pdfIn PDF document text
- https://pmeds.us/userfiles/file/vosaguxatiserapotubo.pdfIn PDF document text
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160785334f23bf---jojunewulakuzirolu.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7d57d76ab---51562710284.pdfIn PDF document text
- https://xigmatek.com/upload/files/32314852645.pdfIn PDF document text
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/o9fdnkt44djnkidjlhtun9v67o/14869540719.pdfIn PDF document text
- http://lafenicealcamo.it/userfiles/files/69161037604.pdfIn PDF document text
- http://brucemsmithlaw.com/clients/e/e2/e252bfde01ef004f685a9648d307a4b9/File/40045268130.pdfIn PDF document text
- http://houselandia.ru/files/wivozowojedemarupegini.pdfIn PDF document text
- https://emons-verlag.com/testarea/cwsCMSlight/media/files/24345427249.pdfIn PDF document text
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a7accb13582---xezitoxosujaxorirakena.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=chemical+oxygen+demand+definition+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_off0000d6b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6B0 | 11044 bytes |
SHA-256: 21b810ba606c4d94ca5cd5f6a60030bc6630abb48a72f93f8999bf8cab90b5b9 |
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font_01_sfnt_off0000f00f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF00F | 18256 bytes |
SHA-256: ffbe75e24c9e862fa4e6ef155c34c3c6dec2ef5988d47034223a2b528043b0c6 |
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font_02_sfnt_off00011f99.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F99 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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