MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a phishing or SEO poisoning attack, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://infrive.ru/uplcv?utm_term=jenn+air+gas+cooktop+repair+manual
- https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/7daf264327ea45208df67c37ad386374/sukotegodebuzibim.pdf
- http://agierresrl.it/userfiles/files/sijefivirefopa.pdf
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cdc062336aa---mamojuzepanabazirukezato.pdf
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c21bddac3d6---78213651170.pdf
- https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/xiregesaz.pdf
- http://refah4ter.info/basefile/hotelrefah4terir/files/guvagufomuziz.pdf
- http://resetimpianti.it/reset/public/file/83452596510.pdf
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609767082c1f9---56045576971.pdf
- https://autopratichesas.it/file/99275985045.pdf
- http://ramenhajimetustin.com/uploads/files/81026964381.pdf
- http://aaz.sk/editor_uploads/files/50495685230.pdf
- http://indel.sk/userfiles/file/rupavekil.pdf
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e1aa0ad80---67811686195.pdf
- https://kede.org/userfiles/file/sedawibu.pdf
- http://cymrozgreatdanes.com/clients/1/1a/1a407d8ccac5525c71aaafb6b4664123/File/42824258450.pdf
- http://hotelbelleepoque.bg/userfiles/file/63995740370.pdf
- http://vodnik48.ru/content/file/lezewoxunusuzutonisowe.pdf
- http://lex-ter.ru/admin/ckfinder/userfiles/files/gajurokituk.pdf
- https://autoprofi.ua/userfiles/file/57087440130.pdf
- http://decoworld.in/dayafter/uploadimages/newsimages/file/kafaponesosuzufaku.pdf
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/92f1ef75e749e8e32a8745b90e1c0c33/rimalivisuvuvezawonelobap.pdf
- https://susta.vn/userfiles/file/gujunakokuzinuziji.pdf
- https://suma.ca/upload/editor/file/nigetegisajabe.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_off0000b39d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB39D | 16792 bytes |
font_01_sfnt_off0000cbaf.bin586c3a0fc34582260152778b0e68fe4ec76109612f47149fc210f831cb2450f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBAF | 15316 bytes |
font_02_sfnt_off0000f280.bin07bdab3936094091b31da54b34fbccca6979034a9ba8c4a699f774f7f7899dc8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF280 | 10900 bytes |
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