MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous external links, many pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to lead users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://medvor.ru/uplcv?utm_term=wicklow+to+waterford
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093558f79df6---lovuwuvepelonezonuziroke.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/ronch720csi7rc9c153cnh16p1/85682596519.pdf
- https://marjoyunlar.com/calisma2/files/uploads/36283585888.pdf
- http://nceed.kr/pds/userfiles/files/662949269.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824a7a968d2---nadofewepowera.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b26ed1ac164---japajugopigul.pdf
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711349ab722---pujexikutajad.pdf
- http://vswet.ru/f/gutuladiwezibetiwepor.pdf
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/338da51d22d43bc2fe6af1f3ecd2e6b2/66343684195.pdf
- https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/50359984836.pdf
- https://triosms.com/userfiles/file/folofaxopet.pdf
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/216aae4a529c48b27ea80146728ff8da/bevugened.pdf
- http://studiomedicoveterinariobellucci.eu/userfiles/files/10414734493.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608588dd59204---bafexusebesaf.pdf
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/8a01eea172d2ccdbc8000ec4d1fb80c2/84682791660.pdf
- https://ludifrance.fr/userfiles/file/320677365.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903003646a0---75738484759.pdf
- http://asea-admin.com/_userfiles/file/20210523110950.pdf
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/7537362951fec94976c06d32584da3c7/14023055590.pdf
- http://www.dean-cpa.com/files/adminpic/file/43971210099.pdf
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab08316d061---kolajaxinikemusajuvudex.pdf
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/wumebegedirowoxupifo.pdf
- http://www.advokat.com/app/webroot/img/fck/file/46261807041.pdf
- 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_off0000ec02.bin52eb45285fce7b3c62168223fb203f024c12bb37aca8b941e0b2ed29bc3ca8c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC02 | 17400 bytes |
font_01_sfnt_off000118b8.bin6330f02829fe58fb5cac1c1f9b61b1af5f36ac7623517945eba5c52cad6b0005 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118B8 | 10368 bytes |
font_02_sfnt_off0001305a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1305A | 16792 bytes |
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