MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites hosting other PDF files. This suggests a multi-stage attack where the initial PDF serves as a lure to download further malicious content, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160af7ce9d44c2---kutobotagazopovel.pdf In PDF document text
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/df594d3e43b972e9523f5453d953e236/vufojutikar.pdfIn PDF document text
- http://hevolta.com/upload/file/nuvoxeguzipasedife.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/775a4b1bc43599bae6f726119c08387f/40147249711.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091a1deef946---borijogexob.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160730d5b81a2c---37370758576.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3590a8b6f---42651046518.pdfIn PDF document text
- https://planet-for-events.de/userfiles/file/39752299240.pdfIn PDF document text
- https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/1afcdeeac35cc4bce80e511d4c0bb5f3/42357108174.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abdb180846b---18893933887.pdfIn PDF document text
- https://giolog.biz/images/bulk_images/files/53782177035.pdfIn PDF document text
- http://safeabortionnepal.com/userfiles/file/gemuxapalubisumip.pdfIn PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/a3d3e12496a4f499f181f874fd29628a/52821433833.pdfIn PDF document text
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/mnas3v9s4s4l4kjvggksa539p0/34416709172.pdfIn PDF document text
- http://hyperasp.net/userfiles/file/pezukigamowedodati.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=one+day+hans+zimmer+pianoPDF 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://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_off0001b387.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B387 | 5344 bytes |
SHA-256: ff112a7841ff0067c79d11cc8c7fae4c7a470a34c5999b8875fa389eb6171db1 |
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font_01_sfnt_off0001c593.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C593 | 13604 bytes |
SHA-256: f0aa937b24834698310d7b14b0ca5dfe1be2a6a07f38556d4f9c4994b8dc88da |
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