MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS upload storage, with numerous distinct hosts and URLs, many of which are associated with disposable hosting. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/6i70o4tc9vftcbrojk0lgabgm4/27357734743.pdf
- http://baihsad.com/userfiles/files/20210704_085214.pdf
- https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/41be3f4a51ba0a252b7d41de7b40b001/31744508653.pdf
- https://congchung7.com/upload/file/fogotupaledavofenuvi.pdf
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/dm9btm7bifa54l4kerb92g7k43/jumakulaxatujunivuk.pdf
- http://anthonyvienna.com/sites/default/files/file/11436470668.pdf
- http://musorcentrum.hu/files/article/file/rodapelolusutiwi.pdf
- http://crystalsteakandstogie.com/clients/1/1d/1dbb6d5698303b6304ae84622e226a19/File/somaguduja.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608803a79fe69---jalisibemegiwulaniri.pdf
- http://geostudio.eu/userfiles/files/piduruzakufaxivoxexefu.pdf
- https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5090375fa---3187896563.pdf
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a990179d40b---xumakokakisup.pdf
- http://caratow.eu/userfiles/file/buguxeput.pdf
- https://10glazsikeyrosa.ru/file/91682638799.pdf
- http://omonetach.pl/foto/ilustracje/file/godulu.pdf
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf122ad63d---lexazexijeravagodupuju.pdf
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f28ce79ec4---74524176280.pdf
- https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/9v8s7rgf4ofap3890gqfjcmmtu/ranezom.pdf
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737921358d3---rujirilunumufalupuputoji.pdf
- http://hzdsbg.com/uploadfile/1620973877.pdf
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/efv5o9ucbeo6hcbd7aqfm9bits/49105810419.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffae48feaa---nuwiwiberedo.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/b03bf4fb54a8f94d01a5c926bc8fc8bf/nidowogaxuwobipegewawul.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e618d40a51d---tijumojosekedufizude.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=what+is+italicized+compound+word
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fc5b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC5B | 16792 bytes |
font_01_sfnt_off00011472.bin6fdef0877ace30172dc7648280174cf03ceafd04e729782d9c0181bee80489e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11472 | 11020 bytes |
font_02_sfnt_off00012df0.binfcb03888140052d64ec7cb7c06322039af42b0dadbca5c44d99d8de60ee6cc2f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DF0 | 19356 bytes |
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