MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous external URLs, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://synerhu.ru/uplcv?utm_term=how+to+solve+algebra+problems+step+by+step PDF link annotation
- http://adamslakeband.org/userfiles/file/vuzuzojoro.pdfIn PDF document text
- https://ntct.dz/ckfinder/userfiles/files/fotufikigovidod.pdfIn PDF document text
- http://thietkewebbacninh.com/webroot/img/files/8819445956.pdfIn PDF document text
- http://surrattsville69.com/clients/8/81/8122276c22396d7fa0996010cc369f50/File/mulezetom.pdfIn PDF document text
- http://raczcsalad.hu/files/kowutegitoja.pdfIn PDF document text
- http://lt101shop.com/userfiles/files/99145795858.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/336860e18230bf7245c2fbfb51a8d97d/nasajim.pdfIn PDF document text
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073beda78453---15791343559.pdfIn PDF document text
- http://asupuro.com/user_data/image//file/44138985794.pdfIn PDF document text
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fb6a0b5e0---7975746221.pdfIn PDF document text
- http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16051d471e---11561313433.pdfIn PDF document text
- https://autotronics.vn/userfiles/file/tuwejiwusagibotudupozox.pdfIn PDF document text
- http://melinterior.ru/userfiles/files/lakopofo.pdfIn PDF document text
- http://shipagents.nl/uploadfiles/file/wopurosipepo.pdfIn PDF document text
- http://yuemeism.com/uploadfiles/files/gurinepazefopiwujedipodul.pdfIn PDF document text
- http://apexibd.com/uploads/fck_uploads/file/16997783782.pdfIn PDF document text
- http://timnhanhonline.com/upload/files/wunopaxixepuxubajex.pdfIn PDF document text
- http://artecgroupservices.com/imagenes/file/sapovimububada.pdfIn PDF document text
- http://3wsystems.com/shipinc/userfiles/files/rupotutofezubom.pdfIn PDF document text
- https://theatresaucinema.fr/uploads/file/wefetarubonuv.pdfIn PDF document text
- http://ceomit.com/fckupload/file/mirirumeput.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/nisameb.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_off0000f0b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0B6 | 10796 bytes |
SHA-256: a417d52de32e18699c32ac9fc15354a79fb4e52e4515432b677669a273f6a080 |
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font_01_sfnt_off0001097a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1097A | 17380 bytes |
SHA-256: fe746ead637c35fb6b1be1094bfd5630d8839057dc5e45ff43cbe114b0e39f71 |
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font_02_sfnt_off000136fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136FE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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