MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains multiple links to external resources, many of which are hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports this, indicating a lure for users to download a payload. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/301e322rtb0o46jp9nkl3s2sm0/lefalud.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161346b312ca56---gorugajikovorobotuliwib.pdf
- http://aokunoil.com/ckfinder/userfiles/files/2837686312.pdf
- http://rigassprotes.lv/uploadz/file/mezurem.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140143d00124---sododitifunodalirozogejo.pdf
- http://munnarinfo.in/userfiles/file/vulifutivudaw.pdf
- https://lederstuehle-shop.de/ckfinder/userfiles/files/zolomupimol.pdf
- http://atomleasing.ru/media/File/golabosenapowube.pdf
- http://escrima-rlp.de/userfiles/file/2272128638.pdf
- http://greensquares.in/userfiles/file///45741076765.pdf
- http://ihdbd.org/upload/files/vegafi.pdf
- http://hgbs.de/userfiles/file/27168857272.pdf
- http://generaltubi.com/container/ckfiles/files/64802440976.pdf
- http://dentherapia.hu/files/file/62872607825.pdf
- http://kbcsisa.com/upload/fckeditor/file/98768931956.pdf
- https://nevjegyzek.eu/uploads/file/50624356288.pdf
- http://baikalspring.ru/ckfinder/userfiles/files/75050283623.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/r0njbfflrmtqi5qerlmnn7ke10/pamivoxupamunuporisuwis.pdf
- https://audreyheselmans.com/_files/file/dojironojikofegovi.pdf
- http://gmei.lt/ckfinder/userfiles/files/4976082514.pdf
- http://vhktn.at/images/content/files/96335001664.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=exit+from+recovery+mode+iphone
- https://b2cdemo.tickets.com/content/files/napalurok.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_off0000db08.bin5e1757eabd4640a90e694d2f254a17e8280ea207798e51d8753c1445c6414357 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB08 | 10776 bytes |
font_01_sfnt_off0000f3a6.bin1a7cd0e63592e79108dbd7023bedbd183aed973f62576941d82cc3e6f07ab966 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3A6 | 16348 bytes |
font_02_sfnt_off00011d9d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D9D | 16792 bytes |
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