MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm on compromised WordPress sites. The embedded URLs, such as the one hosted on plusbateria.com, are likely part of a phishing or redirection scheme. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16134445519968---45072279414.pdf In PDF document text
- http://almar-bus.pl/userfiles/file/16708666718.pdfIn PDF document text
- https://efnnma.org/files/file/31157109894.pdfIn PDF document text
- http://ysenb.kr/board/file/editor/file/vujukenareloba.pdfIn PDF document text
- http://bestbelly.org/content/files/files/43743349118.pdfIn PDF document text
- http://pttaccounting.com/userfiles/files/bofuru.pdfIn PDF document text
- https://adesso-moosburg.de/images/file/30489495141.pdfIn PDF document text
- https://jagamimpi.org/contents/files/kobosopilaraxevutagez.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155a371c7fd1---dojaginoxolunebibugalo.pdfIn PDF document text
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/a258c100b0eb9d1f3f5e0abacac6c953/tigawuxow.pdfIn PDF document text
- http://udelimpa.es/ckfinder/userfiles/files/futaxopaj.pdfIn PDF document text
- http://qdsenfeng.com/data/files/86438251236.pdfIn PDF document text
- https://www.twibiotech.com/plugin/ce1/ckfinder/userfiles/files/pidobifosoke.pdfIn PDF document text
- https://conexus-study-abroad-travel.com/ckfinder/userfiles/file/5565112661.pdfIn PDF document text
- http://icsbc.ru/fuploader/file/nanorarinigixotodarafivo.pdfIn PDF document text
- http://eventclub.pl/userfiles/file/70277276168.pdfIn PDF document text
- https://atasuorganiktarim.com/upload/ckfinder/files/zetosatuvag.pdfIn PDF document text
- http://whatifitspossible.com/ckfinder/userfiles/files/30586445474.pdfIn PDF document text
- https://momsgardenfoods.com/ckfinder/userfiles/files/rozulevesirikiwile.pdfIn PDF document text
- https://optical-axis.com/uploads/files/202109032001242494.pdfIn PDF document text
- https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/99953266902.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=another+word+for+good+writing+skillsPDF 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_off0000f4d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4D3 | 19652 bytes |
SHA-256: 97897e9f93d78f2886fab229f3a97ab566b63950a1e38625dae359d8547a222d |
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font_01_sfnt_off00012780.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12780 | 10628 bytes |
SHA-256: 63ccf8500d439c9ecf9a674959e2a004d365251e598060dc9d676f5f7d543ff8 |
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font_02_sfnt_off00013f9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F9B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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