MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document is identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, indicates the file is a PDF related to 'math shortcuts and techniques', likely a lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://wastran.ru/uplcv?utm_term=math+shortcuts+and+techniques+pdf PDF link annotation
- http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a160c951851---zitilowisol.pdfIn PDF document text
- http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609308e3e3358---xitikovewovarugomev.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f143538f9d---sozesik.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/k7v1cla6ag4j0l6uhr595ahll2/sewamuxuzelanevinudugez.pdfIn PDF document text
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/af29dc214aad3a7b7fa9443263f48751/rokizugejupu.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/5fbd39d734cd83fe3f745a60dd7bb33f/99491344945.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e0bc43273---fonuzadusavekisunugexin.pdfIn PDF document text
- https://zanhotel.ro/beficientconsultingFiles/file/rijefotijojaxikafinenuje.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4afd0900c1---vizozewomo.pdfIn PDF document text
- http://aliglobshop.com/userfiles/file/xoruforekunekefulabumibaj.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5fbf8e7d6---15669891496.pdfIn PDF document text
- http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/wirowetididelezog.pdfIn PDF document text
- https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/2debefabfb2393674aa622f2cfb4c50d/lemipusup.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a84b14ef491---12357570596.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/b445oq6q5guuar4d73lsrjn8e3/90352753737.pdfIn PDF document text
- http://szpk.hu/_user/file/92325228762.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607efe9529fb1---49115630086.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010430.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10430 | 5340 bytes |
SHA-256: 3794fbdcedee1563a0539635332f0ecef1b264369832313cceeb184c10c1ec32 |
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font_01_sfnt_off0001165d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1165D | 10324 bytes |
SHA-256: 31a9d005419d5aa16739552390b71c1df7fb7037b629d912cc95aa47de423cf4 |
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