MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting. These links are likely part of a link farm designed to redirect users to malicious sites, consistent with phishing or malware distribution campaigns. The ClamAV detection further supports the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier suspicious score 0.4110
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://medvor.ru/uplcv?utm_term=clean+up+files+on+android
- http://eventclub.pl/userfiles/file/35648944197.pdf
- https://investir-petroleo.pt/ckfinder/userfiles/files/sakevataji.pdf
- https://bevasilicones.in/userfiles/file/73143130644.pdf
- http://drtamerturan.com/file/35713951348.pdf
- http://ultraljud.nu/bild/files/wurukasowiv.pdf
- http://104408017.linker.tw/files/xevopunobegu.pdf
- http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/72134783513.pdf
- http://kaies.net/upfiles/2109051900280051821xw840.pdf
- https://photopoligrafic.ru/ckfinder/userfiles/files/tifizuzataxizikagamixuved.pdf
- https://k-barrierfree.com/FileData/ckfinder/files/20210912_AA0D0D1496B17094.pdf
- http://tieclangman.com/Images_upload/files/wodifexuwaluride.pdf
- http://sacmacbook.net/userfiles/file/soxagavufowowenowisawew.pdf
- http://autostyle-japan.com/js/upload/files/sutamagiworojubunib.pdf
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613679614f7f5---64145183475.pdf
- http://rocincorporated.com/domain.com/images/dynamic_pages/file/50486311549.pdf
- http://investgeorgia.ge/userfiles/file/6153068558.pdf
- http://telegid.tv/userfiles/file/81238080175.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/b177b0081147458495abd600fe764f99/54836364524.pdf
- https://floraplant.gr/FCKeditor/userimages/file/6468083292.pdf
- http://zbirozskepodzamci.cz/userfiles/20164235115.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed042a8220---xizod.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ihvr4u1h3ef5uckbpvtc3gjsm6/mugididanaposojaminoneta.pdf
- http://julianowka.pl/ckfinder/userfiles/files/bujibad.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/161353f3e8c85f---29470174077.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16132f55b91fcc---55474033731.pdf
- https://fainitelecommunication.com/public/editorfiles/file/24690668464.pdf
- http://www.mecateengenharia.com.br/ckfinder/userfiles/files/68930350080.pdf
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000de3c.bin938b5b14c6f5c57673750ee22e739212b0b2ba755fe9ea944aeef0909223bc38 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE3C | 10524 bytes |
font_01_sfnt_off0000f640.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF640 | 16792 bytes |
font_02_sfnt_off00010e52.bin427641df0cef659fe9531d0eb18afef0c0d1e0c0db976ed8acacf080f9bb0a87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E52 | 17020 bytes |
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