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 URLs, many hosted on compromised CMS upload directories, suggesting a link farm or phishing lure. The PDF structure and embedded URLs point towards a phishing attack or a distribution point for further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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://infrive.ru/uplcv?utm_term=quotes+from+stave+1+a+christmas+carol
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/ffe1ce9713495c24d8cb96112fec692d/betiwabafadawatog.pdf
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/ea516a0475d07a23d95c77ca3bbda494/lokamenipik.pdf
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a750e2a0a---50171843873.pdf
- https://actor-conseil.com/files/file/xizepudigiz.pdf
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a60c715d649---delijuviximuzibefolasiba.pdf
- http://winkeleninzundert.nl/uploadimages/files/witemexa.pdf
- http://reanda.com/jingkelun/userfiles/files/20210603203122.pdf
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/d6625aa46753340a2f99f1bf0dfcab08/nukezema.pdf
- http://j-club.eu/userfiles/file/zerapuluguxixix.pdf
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/6c523ee10f0a78f60c361fdf9c462e47/77940931774.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/a5cdc56b917704c28439e2f4885de99c/bovukiku.pdf
- http://aelma.com/sites/default/userfiles/file/bivudaditubalat.pdf
- http://4reality.cz/userfiles/files/40343222159.pdf
- https://alarrabnews.com/images/content/content/file/nevabudurexiv.pdf
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160b6128bf14d1---88433484202.pdf
- http://krevue.cz/UserFiles/File/87018307834.pdf
- http://fine-cottage.ru/userfiles/files/56699276565.pdf
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/ctja9e48843t6q3f6hm7d0orj2/16669294081.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/14b393e33753dd03c0b538ad0350889e/6286019563.pdf
- http://mobilesamara.com/img/files/file/rozipijowu.pdf
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a0d4bc4b7---ligavejupaweposozem.pdf
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16091535eb0f96---mefupabimopejozag.pdf
- http://blueyee.com/upload/file/010106198049.pdf
- https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/60b8e15962e82e774c05f1ddf66515e6/82279185631.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- 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_off00010ae1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AE1 | 16792 bytes |
font_01_sfnt_off000122f8.bin1c1c83da630e0a7d59cc2a6895d889fde7abac9c369118c355fe052807ef33f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122F8 | 10776 bytes |
font_02_sfnt_off00013bfc.binf186f752683b4bb69440e500a28cc28d2d3b74c3580cdf2e797ca980a52b0bc4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BFC | 17124 bytes |
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