MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS upload directories, suggesting it's part of a link farm designed to redirect users. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this, indicating the PDF's primary function is to host and distribute links to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://allytemp.ru/uplcv?utm_term=medieval+japan+feudal+system PDF link annotation
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/6c4c1aba24dd3443d1b66c47bfc6c324/44888193585.pdfIn PDF document text
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161354003c25a6---wivisuwavinedozoni.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613c66fa8a112---rafowaxegabixidulo.pdfIn PDF document text
- https://digireg.cn/upload/zizafaganovafo.pdfIn PDF document text
- http://szerecsen.hu/editor_up/petufebak.pdfIn PDF document text
- https://polandpools.com/contents/files/nawajenuzozamuzubexuw.pdfIn PDF document text
- http://foto-preiss.at/upload_files/files/72212968783.pdfIn PDF document text
- https://lmetinternationalschool.in/ckeditor/ckfinder/userfiles/files/tazusubozupitus.pdfIn PDF document text
- http://bloemenwinkelindex.nl/images/uploads/lalipusofomegu.pdfIn PDF document text
- https://hagabb.ro/ckfinder/userfiles/files/vewodavoperezesun.pdfIn PDF document text
- https://mcq.bmtinhoc.vn/InteriorWeb/images/images_news/files/2328729023.pdfIn PDF document text
- http://pegastelco.com/pictures/files/mexanulejunazexaki.pdfIn PDF document text
- https://hyundainhapkhau.vn/upload/files/65934566549.pdfIn PDF document text
- https://ajansnigde.com/resimler/files/vapomuwir.pdfIn PDF document text
- http://nanopena.cz/upload/file/63946483324.pdfIn PDF document text
- https://hinodanang.com/uploads/image/files/50916393844.pdfIn PDF document text
- http://magiepourenfants.com/images/mediamanager/file/baduvasenaxod.pdfIn PDF document text
- https://dusunceokulu.net/resimler/files/44354579837.pdfIn PDF document text
- http://mehmetrasimmutlu.com/icerik/file/79636561495.pdfIn PDF document text
- http://begemot-rus.com/uploadfiles/file/2021090704590173499.pdfIn PDF document text
- http://phdpecs.hu/userfiles/files/18000914482.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_off0000dbde.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBDE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f3f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3F0 | 17872 bytes |
SHA-256: 58750ce63058c6bf1dbc278138147029717de9433a672e9c23dcbc7543f0aa5c |
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font_02_sfnt_off0001226a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1226A | 10844 bytes |
SHA-256: 910ff20bf228b994f59231cc80653289aa44bb74f67974a503648a2cc7984f28 |
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