MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The presence of a link farm pointing to compromised WordPress upload storage and other disposable hosting further suggests a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
Heuristics 7
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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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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://nutricount.cz/UserFiles/File/metolimomevasowibe.pdf
- https://longhoang.vn/upload/files/duwid.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160840291983e5---86507502358.pdf
- http://changju-hotel.com/CKEdit/upload/files/nufivovibi.pdf
- http://builderall.info/userfiles/file/1775235384.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bde3175e2b1---bawedalosaruroliketonu.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/f1ba2f68f5fbf92333c4b5471340d383/71891456031.pdf
- http://tsutae-f.com/js/upload/files/tezanabopugizafun.pdf
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7a9eedebe---71928432784.pdf
- http://luberoff.com/userfiles/file/14330087855.pdf
- http://occahomesearch.com/userfiles/files/11695640629.pdf
- http://rajskiewakacje.pl/userfiles/file/47367936003.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/a158795365a2bbfdd9ce0678dcd60d4e/zinuxumelafukerijukaj.pdf
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16081045d181d0---52706379313.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085f24dbbd67---gexazavafiwidatewoku.pdf
- https://ovth.ch/userfiles/files/34943823476.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d031645e71---19574242785.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160943603633d5---34994606293.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/77a1f48eae0b54bde69a2b3ccdfeab66/24414279884.pdf
- http://kiszelyugyvediiroda.hu/docs/file/runopavofanibutawamesilo.pdf
- https://resonanceacteurs.nl/userfiles/file/pepizuzonapenubex.pdf
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/0fae89fdbc216f38bb2dc0af30f06fcb/34553043413.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160852bdfdbb26---rokawim.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075fdacdc0e1---64470929099.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=jannes+and+jambres+withstood+moses
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ffb0.bine3d6e255d17d076f29bf472cc2cdd1e888c631c2daeb11130a2a80d3405ade23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFB0 | 10812 bytes |
font_01_sfnt_off00011871.bine50c75b16b85b97a06dd022d4dfc8d4ef59e51ae2fc13614076145214a402c58 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11871 | 17428 bytes |
font_02_sfnt_off0001463d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1463D | 16792 bytes |
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