MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to other PDF files hosted on various domains, some of which appear to be compromised CMS uploads. The presence of `utm_term` parameters in some URLs suggests an attempt to track user interactions, common in phishing or malware distribution campaigns. No scripts were extracted, but the overall structure points to a multi-stage attack where this PDF serves as a lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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=terraria+mage+character+download PDF link annotation
- http://secureyun.cn/uploadfile/file///2021072418172489.pdfIn PDF document text
- https://acryl-bg.com/userfiles/file/fivavopovipatasixiliju.pdfIn PDF document text
- http://xn--9w3b270a7kf.kr/ckfinder/userfiles/files/23025211453.pdfIn PDF document text
- https://aslimitada.com/userfiles/file/35993602899.pdfIn PDF document text
- https://ceccarmaramures.ro/userfiles/file/jesolegepatinujabur.pdfIn PDF document text
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/6e8c43b87fda4fed43d897b44897a571/fuvuja.pdfIn PDF document text
- http://modaxch.com/userfiles/files/vujipodo.pdfIn PDF document text
- http://angel-conference.org/upload_fck/file/2021-8-17/20210817104146883375.pdfIn PDF document text
- http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/1419c88ced5f799fcdc545162889ad64/60283001102.pdfIn PDF document text
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/6c5cae58d497b08f8c83a0029d119f53/tevipapekorebepasiti.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724819b185c---jodozabovige.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160db2b2480244---setubeb.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ecc0b4760b5---zidowifimogoked.pdfIn PDF document text
- https://kipass.fr/userfiles/file/16418447417.pdfIn PDF document text
- http://networkinglikepro.com/ckfinder/userfiles/files/bomisulivorivafirol.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b346563fcc8---vixovonosi.pdfIn PDF document text
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b9922bdca85---kujudaga.pdfIn PDF document text
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/3jq7981rha6ejbq1lf4b64q2i3/16733805240.pdfIn PDF document text
- http://edeins.com/userfiles/file/82240232384.pdfIn PDF document text
- http://moorheadhigh1970.com/clients/c/c3/c3beaea4c2dff0dfe15f0c96d12524a1/File/19766825326.pdfIn PDF document text
- https://mokshadhamnepal.org/userfiles/files/duvolidubitetida.pdfIn PDF document text
- http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/8bp3sdfonkolfkp9sb696alj31/93099634516.pdfIn PDF document text
- https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bbac8b8df---21936569159.pdfIn PDF document text
- http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/69337733788.pdfIn PDF document text
- http://architettomontanino.eu/userfiles/files/wawixovipomofabatebufes.pdfIn PDF document text
- http://automotiveenergy.cz/userfiles/file/buvojizulefurigageku.pdfIn 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://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_off0000e857.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE857 | 18284 bytes |
SHA-256: ac59ab3dc4b6d520d3aa33c6f4022ef426f888a0baf4016bf4542ce8288e1636 |
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font_01_sfnt_off0001179b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1179B | 10696 bytes |
SHA-256: 18725c7833738995df30346caacaf9fc0f44e3ad76cf0ba92ff4d0023f4c34b1 |
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font_02_sfnt_off00012fcb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FCB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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