MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to external sites, some hosted on compromised WordPress installations. The document body is unreadable, but the heuristics indicate a malicious intent to redirect users through a network of links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://dunaweb.co/bg_image/files/7009199287.pdf In PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/3c08fd52e0c73100df2a639b3cfa605c/79402375435.pdfIn PDF document text
- http://ifap.it/images/file/58567837632.pdfIn PDF document text
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140955c50933---6289840848.pdfIn PDF document text
- https://zagi.hr/files/77259726076.pdfIn PDF document text
- http://kyea.org/imageuploads/19359644463.pdfIn PDF document text
- http://caratow.eu/userfiles/file/81205028562.pdfIn PDF document text
- http://ck-kutnahora.cz/gais/image/file/pevitusaginubasizub.pdfIn PDF document text
- https://curewelldiabetes.com/userfiles/file/ludeguwuwilidume.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161317f6364742---58822549893.pdfIn PDF document text
- http://huyndaicaudien.com/upload/files/57488630558.pdfIn PDF document text
- https://spacio.hk/attachment/file/wewewazareja.pdfIn PDF document text
- http://gazetavk.ru/img/file/41886543939.pdfIn PDF document text
- http://osmed.cz/app/webroot/files/files/40155962247.pdfIn PDF document text
- http://mtt-association.fr/upload/file/juguvajufizunodaloj.pdfIn PDF document text
- https://maryamghiasi.com/images/upload/files/kufibazeki.pdfIn PDF document text
- https://5of7edwardstreet.com/assets/media/files/pusevijilad.pdfIn PDF document text
- https://alkirbilaw.com/userfiles/files/sejebu.pdfIn PDF document text
- https://mamap.in/ci/userfiles/files/malexilez.pdfIn PDF document text
- http://daegyung.kr/userfiles/file/20210908034614.pdfIn PDF document text
- https://raiporjai.com/piceditor/file/judilodaziza.pdfIn PDF document text
- http://heathrowairporttaxi.website/userfiles/file/gigukanajibu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=curtain+system+in+revitPDF 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_off0000d877.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD877 | 10416 bytes |
SHA-256: 2bc5ad950729a71859804072418dbc51ce3462abd085d8e4e0af18a1a2df7287 |
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font_01_sfnt_off0000f016.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF016 | 18940 bytes |
SHA-256: a1a5ca57b75b522fe7264ea38f2082de5191d40f0bc376ff3fcccd1d89f2cac5 |
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font_02_sfnt_off000121b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121B1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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