MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress sites and disposable hosting. The primary purpose appears to be redirecting users to external sites, which is a common tactic for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/c4febb4a48c35b2a952b870e48bbf704/2116546293.pdf
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/7f11c1f1d7c92e0d90f3f68c82ae1b00/6516592235.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/661545f17b76c1e21a37b2ffb69e7e7e/jutedanigokobivakug.pdf
- https://hinodanang.com/uploads/image/files/57132013214.pdf
- https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/e0af2310221f7257a9131596b4f3fef0/59174210735.pdf
- http://laweasy.kr/userfiles/file/siwufelel.pdf
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f28865e693---wiruremexexumajefejolusi.pdf
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/jkppo3bu3r3ts8uqcc99jgi993/22477888192.pdf
- http://taskentcompany.com/userfiles/file/92655816931.pdf
- http://centrons.com/uploaded/file/93547191560b7e5e6c0027.pdf
- http://perlawarmii.pl/userfiles/file/pirokituwamonu.pdf
- https://rosedreamholidayhomes.com/ckfinder/userfiles/files/lilemeraruginifow.pdf
- https://casabresciani.it/uploads/file/gozupolux.pdf
- https://sokolzgierz.pl/web/uploads/files/sofozegoluniw.pdf
- https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/krd3ko0ibldv222r28iobtlp05/tukumiju.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944b90e67c8---37959661806.pdf
- https://cjsc.se/ckfinder/userfiles/files/xubilukokodowuluxar.pdf
- https://accuratesearch.com/userfiles/file/2619177491.pdf
- https://ecohort.com/userfiles/files/wixunijolitilu.pdf
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1f427c663---84808057594.pdf
- https://bookatowncar.com/userfiles/file/65019283463.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c4c0e1d60---tuwopemukevobadiluno.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=buying+a+new+construction+home+contingent+on+selling+yours
- 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_off0000deed.binb5de0ce0698ec7bacdde7e7a137427936983357df78fc27856bc22ca994f2f8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEED | 11028 bytes |
font_01_sfnt_off0000f887.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF887 | 16792 bytes |
font_02_sfnt_off00011099.bin22e56262ca7544748e1c41d32794eacaa763afa446980d331a1a8608edf66f40 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11099 | 17172 bytes |
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