MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Numerous heuristics point to the PDF acting as a link farm, directing users to various external URLs, many of which are hosted on compromised or disposable domains. The presence of external URI links and compromised CMS upload links suggests a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://laborke.ru/uplcv?utm_term=mimi+4chan+app PDF link annotation
- https://mashtalkandil.com/userfiles/file/kolumafasuxesezezaw.pdfIn PDF document text
- http://falegnameriacastiglione.it/userfiles/files/winawiwesoboxuvenebo.pdfIn PDF document text
- http://shesob.com/file/files/54040618577.pdfIn PDF document text
- http://cnc-soustruzeni.cz/files/file/tuwovenuwesazejavufurufok.pdfIn PDF document text
- http://medica-brno.com/files/vitedokiluredazaxexaxoduw.pdfIn PDF document text
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3590591c7---42609731705.pdfIn PDF document text
- https://gianlucabruno.it/dati/upload/file/79194740118.pdfIn PDF document text
- https://hopclickhospitality.com/scgtest/team-explore/uploads/files/46059929785.pdfIn PDF document text
- http://depcip.com/app/views/panel/ckfinder/userfiles/files/58595293647.pdfIn PDF document text
- http://ayurveda-shiatsu-nice.com/upload/files/92574792450.pdfIn PDF document text
- http://crmrealty360degree.in/userfiles/file/41860820605.pdfIn PDF document text
- https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/14158814682.pdfIn PDF document text
- https://dongciao.com/uploads/files/202109221552185237.pdfIn PDF document text
- http://peneleos.pl/userfiles/file/zigupe.pdfIn PDF document text
- http://www.coverseg.com/uploads/ckfinder/files/zexera.pdfIn PDF document text
- http://mecateengenharia.com.br/ckfinder/userfiles/files/64505794732.pdfIn PDF document text
- http://iccj.jp/images/uploads/fckeditor/file/31960659858.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b2d85212bf---mokixijoj.pdfIn PDF document text
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/199e06cbfd7de2f20025e77d382aeb9c/66252607069.pdfIn PDF document text
- http://simp-q.ru/userfiles/file/59176603555.pdfIn PDF document text
- https://fizjolech.pl/userfiles/file/nepele.pdfIn PDF document text
- http://surveycook.com/upload/tmp/202109/file/64505354731.pdfIn PDF document text
- https://magnanelli.com/userfiles/file/21238579949.pdfIn PDF document text
- http://tplustech.com/images/ckeditor/files/dokama.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_off0000b193.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB193 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c9a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9A5 | 17748 bytes |
SHA-256: 7a0642188105fdb5098353ebe1fd068d4bce1edd90b61b1f720bf532c8a14661 |
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font_02_sfnt_off0000f752.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF752 | 10044 bytes |
SHA-256: 08ab8b0b1d5da6a00c52f97a4f41f2953f17c4526e09923886425190b32d4449 |
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