MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous links to external PDFs hosted on compromised WordPress sites, suggesting a link farm used for phishing or malware distribution. The heuristic 'SE_INVOICE_LURE' indicates the document's content is designed to mimic an invoice or payment request, a common social engineering tactic.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3ecf0da00---43582055353.pdf
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e99d57ee3---vowesux.pdf
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160956882101ec---50976408792.pdf
- http://highendschmiede.de/highendfiles/file/84516310108.pdf
- https://residenciasanamaro.es/userfiles/files/18842904026.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/5lgbs5s65tisaec6c1hegp67u6/defokuvuta.pdf
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d5f96d133---wojapagofanoxularubofo.pdf
- http://maristaslardero.es/userfiles/file/84497637705.pdf
- http://studioriboldi.eu/userfiles/files/poxetu.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a8f21d1ce---90060823983.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a66e4260cc4---19656081334.pdf
- http://richfield1962.com/clients/4/47/47516dc9824f3897220912ef171c404f/File/22464465516.pdf
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d1a951c6---98186323676.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e9046f812---36793421002.pdf
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e6252af2e5---jigakusoxejejeman.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d427180e02---jabigasivopozis.pdf
- http://transsnabstroy.com/userfiles/file/gagidezuwapam.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/25a7b67022edc9e8f391bf16ccd5f8f3/bujafema.pdf
- http://skrabl.pl/www/rpbd/fck/file/73681636925.pdf
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0d30a8754---63553755815.pdf
- https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/1c43fcbbc66720af2153d12ec699f387/weloputozagivujeguvo.pdf
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/4c35582567bd25b8a4784e3155fc0f7f/47583634345.pdf
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609862e706171---punosagakakugulepurejero.pdf
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a780a2bdc1---73407064685.pdf
- https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/53548a1260a4d884b11123e1829b2730/muverok.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=termination+of+lease+for+non+payment+of+rent
- 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_off0000fecc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFECC | 16792 bytes |
font_01_sfnt_off000116de.bin04b0394e794831c2bcaf32e7be11c3f71f5d49cdae51e5fe27a3dc20c645f8a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116DE | 16768 bytes |
font_02_sfnt_off0001427d.bin5c96a6c77e8df89e3f44f0fe01bcbf22d8b364423108cb3fd04de673843127cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1427D | 10596 bytes |
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