MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The primary purpose appears to be directing users to phishing or malicious websites, as evidenced by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://chcial.ru/uplcv?utm_term=membrane+technology+in+the+chemical+industry+pdf PDF link annotation
- http://cmrivestimenti.com/userfiles/files/pesewexobivezelibop.pdfIn PDF document text
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0255cfc60---98615677483.pdfIn PDF document text
- http://coeb.eu/userfiles/files/9588541426.pdfIn PDF document text
- http://www.gesas.it/media/mailinglist/file/88165468040.pdfIn PDF document text
- http://avandcie-energy.fr/ckfinder/userfiles/files/nanenaz.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/006a66201ebb1ee1685945e255d4ffce/58984794782.pdfIn PDF document text
- http://domgr11.ru/uploads/files/13628089261.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/1546075264.pdfIn PDF document text
- https://yar-net.ru/userfiles/file/90693108668.pdfIn PDF document text
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/1891a7b2030612901a1b16e25b5afd02/27638509818.pdfIn PDF document text
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896854b26aa---namorugoligazozuji.pdfIn PDF document text
- https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/ec19c469cac5806d9b1925c6897ae0a3/dunirupugesudefupet.pdfIn PDF document text
- http://d4sontario.ca/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/valetagoduzulewanale.pdfIn PDF document text
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a168c45d3eb---18735529463.pdfIn PDF document text
- http://fondationmonetoile.org/clients/0/0e/0ecfe6182781ff486fe5156d2e85c11d/File/zazurelujidotulidakedizi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cb66cdd42---75261418369.pdfIn PDF document text
- https://zoorichi.com/temp/fckeditor/file/67821499985.pdfIn PDF document text
- https://bwawarszawa.pl/upload/file/2117201244.pdfIn PDF document text
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d31556e76---barogagun.pdfIn PDF document text
- http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1630464882.pdfIn PDF document text
- https://priscar.com/documents/files/sunefolob.pdfIn PDF document text
- http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/12450658274.pdfIn PDF document text
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/0eef4fd0a646e48455fa084fcaee55b1/dapomujas.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_off0000bd64.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD64 | 15944 bytes |
SHA-256: b2c210dfe70ecafbcbe582c6a0e65b9bfe9aebe89ce67e6e3adbc82ee236fa65 |
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font_01_sfnt_off0000e661.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE661 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fe78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE78 | 11416 bytes |
SHA-256: 5afe11080e6360cef42b01c444f809ae2cf63068c02c46b4ae9783c344609e92 |
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