MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to PDF files hosted on compromised or disposable domains, suggesting a link farm or redirection mechanism. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports its role in distributing malicious content or phishing lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://queure.ru/uplcv?utm_term=pc+auf+android+zugreifen PDF link annotation
- http://nfc-lampang.com/user_img/files/zitabataridawonusa.pdfIn PDF document text
- http://thaoduoconline.com/userfiles/image/file/luguvukakoni.pdfIn PDF document text
- https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/66480332148.pdfIn PDF document text
- https://servauto.fr/img/user/file/83142529496.pdfIn PDF document text
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16147d39366025---37533916736.pdfIn PDF document text
- http://windmill-bv.com/userfiles/files/dimorigurop.pdfIn PDF document text
- http://hanart21.com/files/userfiles/file/tupadesenefuv.pdfIn PDF document text
- https://gretajensen.com/ckfinder/userfiles/files/sesem.pdfIn PDF document text
- https://studiovizia.com/webroot/img/content/files/55413410337.pdfIn PDF document text
- https://balbok.net/admin/ckfinder/userfiles/files/53984631091.pdfIn PDF document text
- http://xn--80aer5aza.xn--c1acndkmcarx.xn--p1ai/ckfinder/userfiles/files/tiwulokawisana.pdfIn PDF document text
- http://instant-image.net/UserFiles/Site/File/59883311027.pdfIn PDF document text
- http://arisutour.com/ckupload/files/32885921469.pdfIn PDF document text
- http://ridendo.cz/files/file/nomonavuvalo.pdfIn PDF document text
- http://tsnpharma.com/upload/files/7012972659.pdfIn PDF document text
- https://abofahed.com/userfiles/file/zubepikediwazosufutut.pdfIn PDF document text
- http://ce-mi.pl/uploads/userfiles/files/69188970217.pdfIn PDF document text
- http://js-space.de/userfiles/file/42875479232.pdfIn PDF document text
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/45afb69c9ebbb7419c8cd6328bb240ff/xufajilerolamever.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/0d11666a7d6cfafb6c40de416c5a42f4/gezipotagesemenaganudipil.pdfIn PDF document text
- http://yoga-privates.com/yoga-privates/file/dobibowitisefizorimunofus.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138cf74cb397---21086270629.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_off0000c304.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC304 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000db1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB1B | 10500 bytes |
SHA-256: 26a9ba3c7850bd040479602aa42d91e89fcd2b694f236c976e3de541f5dc6c69 |
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font_02_sfnt_off0000f2eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2EB | 20296 bytes |
SHA-256: bdef48ceefae87d6e2c8a06b3a5884fd75a531631bce3e59a8234cf90b27d351 |
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