MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure and embedded URLs are consistent with a phishing lure designed to trick users into downloading further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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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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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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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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://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612d5ae2d35c2---jefopovopoj.pdf
- http://cuanhuaabshanquoc.vn/files/sibefekudexifuwebitogej.pdf
- http://xn----8sbfeahwarn6ac1adp3fb2p.xn--p1ai/userfiles/file/63013694800.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160745cee991e6---mawewelepewarusorota.pdf
- https://xn--fct8ml6mwue.tw/uploads/files/melefimijedo.pdf
- https://nawaasha.org/userfiles/file/43233562044.pdf
- https://fid-data.fr/app/webroot/uploaderfiles/48847746245.pdf
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a60d619cf---pugevex.pdf
- http://grandp.ru/userfiles/file/losigafu.pdf
- https://myphi.biz/nbloom/fckuploads/file/ninonejivibetivawomuru.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b86676b638f---29114293897.pdf
- http://herium.net/FileData/ckfinder/files/20210830_124376B70EC4E8EE.pdf
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/de524d58bde67d4a572878e862e57898/44705855729.pdf
- http://cdseoulps.com/uploadfile/fckeditor/file/71466834700.pdf
- https://hoakhanh.vn/uploads/image/files/33403345817.pdf
- http://webatnet.de/ckfinder/userfiles/files/fazotepemerojizojididi.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/hfsvqdi6a3dp0s89pvbedvpb4n/7324707570.pdf
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ccbe1233f---liduzebibewojeko.pdf
- https://rajaunited.com/contents//files/76804702474.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607df61a77377---61203939173.pdf
- http://orvosvalaszto.hu/uploads/files/63630895072.pdf
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e458b382c---34700317022.pdf
- http://vtaky.sk/media/file/jinulemixesedifa.pdf
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161152853bedd8---98921249455.pdf
- https://www.profiemg.cz/upload/ck/files/sanefilozobalinowi.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=manual+de+instalacion+gps+tracker+303g+en+espa%C3%B1ol
- 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_off00012558.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12558 | 16792 bytes |
font_01_sfnt_off00013d6f.bin3072935753517d9aecc38a18714b401cf59d580cf677ce22ffbd876e9468eb47 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D6F | 11372 bytes |
font_02_sfnt_off000157e1.binb1e8d94a49c6551bceec6b3b01f2ae2cfff0cf6626b178a1c1a7f15814f47aec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x157E1 | 20648 bytes |
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