MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links indicates an attempt to direct users to malicious external content, likely for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://backupcenters.com/userfiles/file/pojew.pdf
- http://dragonera.cn/admin/userfiles/file/disabaruxotulapazozozudo.pdf
- http://adance0112.com/upfile/editor/file/zuwasesonesogazubaranop.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d36149bcef---22888252926.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16085a4fe8c70a---bogikajukuzezomufer.pdf
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609e42f51baa4---30519470628.pdf
- http://lab4050.com/upload/editor/file/90373728969.pdf
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/3245b383ff08ee7cb0b848d2a4ccc236/zesavaxuf.pdf
- http://shop-cartuning.pl/userfiles/file/91096252129.pdf
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160841bf59ecbc---33139898486.pdf
- http://yuhenganquan.com/userfiles/file/20210703190614_888017467.pdf
- http://bethelhanberryaaa.com/clients/2/24/2465ef4bb9bb1b7382310ae17d7cafeb/File/pijafowesevubaziximeralo.pdf
- http://dok-vo.ru/userfiles/file/xapomarujaleka.pdf
- http://wittlich-luexem.de/userfiles/file/levidedezaganeluve.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083a64f85d0c---zibewudetevalarime.pdf
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/0ca20beb907ed2c9e44eee1e9fb937b6/69168461240.pdf
- http://cementfeet.com/userfiles/file/48695559962.pdf
- http://debandhelder.nl/ckfinder/userfiles/files/60317805353.pdf
- http://sosnovgeo.ru/userfiles/file/55976244383.pdf
- https://aawyx.com/sites/default/imageuser/file/93981051699.pdf
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c006b765ea6---gidojo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=inch+and+a+quarter+to+metric
- 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_off0000d511.bin7be5b4939af7c087c8afd7206f9ec44e68154e4ee5ef187cd5ab80a4e80a9477 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD511 | 17300 bytes |
font_01_sfnt_off00010252.bin78c8bedc5188e08f7785be3ed8cca9e9edbe9c117543a47094a4b66082a0a000 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10252 | 10620 bytes |
font_02_sfnt_off00011a28.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A28 | 16792 bytes |
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