MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The ML classifier strongly indicated maliciousness, supported by heuristics identifying the PDF as a link farm pointing to compromised CMS upload directories. The document body is heavily obfuscated and appears to be metadata from the wkhtmltopdf tool, offering no direct user-facing content. The primary attack pattern involves directing users to potentially malicious external URLs, likely for further exploitation or phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
Heuristics 5
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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://archism.ru/uplcv?utm_term=supernatural+trivia+crack PDF link annotation
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/j7dmbf2cmt7i8ajmonu4i42692/venawedepaxipel.pdfIn PDF document text
- http://erainbowrealty.com/userfiles/file/28553383917.pdfIn PDF document text
- http://amunt.madteam.net/ckfinder/userfiles/files/14106213356.pdfIn PDF document text
- http://sipzip.com/userfiles/file/9816181985.pdfIn PDF document text
- http://www.cda.org.hk/ckfinder/userfiles/files/7656251301.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613990958c924---venaragujabiguroretivape.pdfIn PDF document text
- https://eltdb.com/UserFiles/files/lezipokebubofut.pdfIn PDF document text
- http://huefpdf.org/upload/file/55673803470.pdfIn PDF document text
- http://sns-russia.ru/userfiles/file/20928603573.pdfIn PDF document text
- http://bamila.vn/luutru/files/84328332581.pdfIn PDF document text
- https://yaslibakicisi.net/userfiles/file/2031318660.pdfIn PDF document text
- http://geomanteia.com/userfiles/files/lusuvibixanebex.pdfIn PDF document text
- https://aprenda-atdi.com/uploads/files/14955338800.pdfIn PDF document text
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/sf99ec6r7eck13688spm9v156e/zakuvilaxozaba.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/122353036462.pdfIn PDF document text
- http://acupunctuuryao.nl/ckfinder/userfiles/files/1797976663.pdfIn PDF document text
- http://trunghungplastic.com/luutru/files/gijaxatu.pdfIn PDF document text
- https://sealordhotels.com/ckfinder/userfiles/files/vaguxowem.pdfIn PDF document text
- http://nigerseedindia.com/uploads/kuruwolokumebazibavikudo.pdfIn PDF document text
- https://ochronaskory.pl/pliki_user/File/39615577093.pdfIn PDF document text
- http://bfcy88.com/uploads/files/47157447539.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139e61761690---34898963598.pdfIn PDF document text
- http://enjoyisagenix.com/ckfinder/userfiles/files/rumiwekavulovododozu.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_off000101fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101FC | 16768 bytes |
SHA-256: dcf27b3d6a1de7b1e13e3d98b56ebf68c6e099b4b134fcbedf3faa53d3ab852c |
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font_01_sfnt_off00012d2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D2F | 10412 bytes |
SHA-256: 5b2bb1a8c3819b06970291d7474c055751645d52d75ef0fd696fd32230263dc7 |
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font_02_sfnt_off000144e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x144E9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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