MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of numerous links, including those with 'utm_term' parameters, suggests an attempt to disguise malicious destinations and potentially phish for information or deliver further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://miet.hu/kepek/xukoba.pdf In PDF document text
- http://revize-elektro.info/UserFiles/File/jekudawerufuwojugidoxima.pdfIn PDF document text
- https://okinawa4d.com/contents/files/33106421307.pdfIn PDF document text
- http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1c71c0356---maziwumeru.pdfIn PDF document text
- https://giriconsultancy.com/content_files/files/33447650564.pdfIn PDF document text
- https://www.bmo-agencement.fr/ckfinder/userfiles/files/mudifavawuno.pdfIn PDF document text
- http://sfalojistik.com/userfiles/file/79758133580.pdfIn PDF document text
- http://litroshaber.net/resimler/files/71702499713.pdfIn PDF document text
- https://biomedchita.ru/imeg_master/file/30532213829.pdfIn PDF document text
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/49954156824.pdfIn PDF document text
- http://birizgardenhotel.com/userfiles/file/woranuvorozilovub.pdfIn PDF document text
- http://ashole.hu/UserFiles/File/53675093095.pdfIn PDF document text
- https://www.casestilistas.es/ckfinder/userfiles/files/gemefafutemo.pdfIn PDF document text
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137747f5f32f---18810860633.pdfIn PDF document text
- http://a-pro-peau.fr/userfiles/file/12006300800.pdfIn PDF document text
- http://tksvolga.ru/userfiles/file/35106171874.pdfIn PDF document text
- http://tw-sincere.com/upfiles/editor/files/poropajunulubove.pdfIn PDF document text
- http://sunnyten.net/userData/board/file/72467838391.pdfIn PDF document text
- http://www.keizerco.nl/userFiles/file/xafoz.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=watch+free+sports+on+firestickPDF 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_off0000c4d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4D3 | 10616 bytes |
SHA-256: 1b70bbe2f087c2e5e35a0f61fd2d1550d299d53b2b0b99b9ad5ada474d646890 |
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font_01_sfnt_off0000dd1d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD1D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f52f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF52F | 17372 bytes |
SHA-256: c912af6b1834e229606bec48a282eb2133cf8d8222739ae3904ef416323b388a |
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