MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links pointing to compromised WordPress sites, identified by the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly indicate malicious intent. These links are likely used to host phishing pages or distribute further malware, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9786
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://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091ab84d2ed6---rexawogukafukebitoto.pdf In PDF document text
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607f05caf269e---gigunifumugifama.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086d185f1af8---26550524626.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098909a223e0---jesubu.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160de6c62c155c---sotivigu.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609619cd13b66---petavenopezo.pdfIn PDF document text
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eac2ccdcca---15519984855.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/c2habujcfm2g9qc68h2km5gci2/pajavunizibaxanabeki.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/49b3c1762cc0dea41f1dfe9a9670e8df/96479550716.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/70992a5feafd103456a64280538bc2d5/91284383142.pdfIn PDF document text
- https://clubsportedinburgh.org/userfiles/files/97328960735.pdfIn PDF document text
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/cd9877de8d2dcacce0926b3e037a70e3/3608186054.pdfIn PDF document text
- https://summit-christian-academy.org/scauserfiles/files/88578760554.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608567b94e3bc---zesosasufetinimar.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/73095a1b934ec114d324089e954a2010/mutebokazegepuduwujoxat.pdfIn PDF document text
- https://comobrew.com/newsite/images/user_uploads/file/natabetopinirajepoku.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a88060e8c22---72933501337.pdfIn PDF document text
- http://aquinasnb68.com/clients/9/9b/9b9a52ed12f3b440fa02b6ce64642487/File/48686478882.pdfIn PDF document text
- http://kapsalonindex.nl/images/uploads/26462145896.pdfIn PDF document text
- http://lnaixi.com/userfiles/file/20210622013803_1503362797.pdfIn PDF document text
- https://medsplus.us/admin/images/file/lemojep.pdfIn PDF document text
- http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/e66521cb278655fdae626145486d9a5a/gesiwibozikakeparux.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ab637a6d9d8---gitivupopegoregunu.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083947b80cb4---37576155178.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160e06e6d2dab7---rupufevutaga.pdfIn PDF document text
- http://k-yoga.org/file_upload/spaw_upload/file/20210503123031.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=meaning+of+brisknessPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_002_off0000e799.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0xE799 | 18164 bytes |
SHA-256: 86b22df796a370009884a4e85ae006c42e8a82accff8d9cef10020795f0f3767 |
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font_01_sfnt_off000103dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103DD | 21192 bytes |
SHA-256: f07707f6cbe4933a8988b9619e19f50635881d2e6d88aee3fa12d695981f8205 |
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font_02_sfnt_off00013895.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13895 | 10472 bytes |
SHA-256: c332eb4ad74af56a81afa3b44e8c3e464534f9aeb55de4621c259e305630b6cb |
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font_03_sfnt_off0001507c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1507C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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