MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on compromised websites. This suggests a phishing or malware distribution campaign, likely initiated via spearphishing attachment. No scripts were extracted, but the structure indicates a redirection mechanism to potentially malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ceef93a5579---43435135303.pdf In PDF document text
- https://prtl.pl/userfiles/file/budizilutegovetagotax.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/aa1f80cb9aeda315b98d6db74f1c4090/sipabukitejevujo.pdfIn PDF document text
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/50d052152c3df583f15af1d192c3d90d/97159860648.pdfIn PDF document text
- https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/ln39megu3tsi8t24vhcn64kpfj/97603000417.pdfIn PDF document text
- http://vladjurnalist.ru/archive/file/75132994112.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b39bc4661a3---rejixokipoxugipeka.pdfIn PDF document text
- http://dataction.org/demo/dataction/media/12636673003.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f67ca22bc---pironomasag.pdfIn PDF document text
- http://ahdongjiu.com/upload_fck/file/2021-6-1/20210601085526337619.pdfIn PDF document text
- http://tencanpowder.com/d/files/24246637920.pdfIn PDF document text
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ab78443079c---zevujozun.pdfIn PDF document text
- https://p1gtac.com/uploader/files/6761262890.pdfIn PDF document text
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b94190c69b0---9130688879.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/5ukjc11npemta3113m9lmhn6o1/ratodativodawow.pdfIn PDF document text
- http://jatyn.cn/upfiles/202105/file/1621211814.pdfIn PDF document text
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/ed457b01a473d561d796a82692748c50/vutanukamemizizobo.pdfIn PDF document text
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa69736634---jobaxunizujironajuv.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ee0472rmrkfr86ppvqrerbq244/54109193734.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/a2e7f74b45cc4b154cea23d29eb3d21d/fogozalimuwolesazu.pdfIn PDF document text
- http://fitnessklub-impuls.pl/uploads/assets/file/97036821781.pdfIn PDF document text
- https://299-45.com/CKEdit/upload/files/6238501946.pdfIn PDF document text
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160c2de3cb658b---24061853327.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=reader%27s+digest+complete+guide+to+sewing+free+pdfPDF 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000be24.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE24 | 17512 bytes |
SHA-256: 639e56e9ca98b2a450ba0b2c0a019d13403a0ad306d60250021ead7078fc1cbc |
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font_01_sfnt_off0000eb6f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB6F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010386.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10386 | 11228 bytes |
SHA-256: 9b87e3f3ca00e13d2c322e3a89b85d224ddc2fe70f8852e5cc81b635ae4341f3 |
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