MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites. The presence of a 'Download button' heuristic suggests a lure to trick users into clicking malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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 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 https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/c1ntvloikdcrr6f20s4tqvm053/69146468498.pdf
- https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/a8514f237b6756a1fb37c58b271914b3/45176451957.pdf
- https://brmc.jp/user_data/userfiles/files/debeminizutemikedununata.pdf
- http://digemnd.com/UserFiles/file/goxaxonidogomop.pdf
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/05988674d34fc0d5648e37941547d815/38297224105.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/2b894b84b2b392b0e36a1e32b58f5d61/79203914629.pdf
- http://al-bandak.com/userfiles/file/kiwuvina.pdf
- https://mimpishio2bet.net/contents//files/48270023906.pdf
- http://blissworldbeauty.com/newerac2c/userfiles/file/59131464256.pdf
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080dcdc38b93---6414714746.pdf
- http://honda-vo.com/upload/file/73130540354.pdf
- http://askort.pl/Upload/file/kovobazigijuvurifonirub.pdf
- http://guides2alpes.fr/uploads/file/zelepaterawetaxubivovi.pdf
- https://atraba-holding.com/userfiles/file/jitupewutumide.pdf
- http://pierrevillers.fr/mairie_files/file/popilapasubezumefi.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160e5b48d3d8ba---74590534528.pdf
- https://ecohort.info/userfiles/files/4035424082.pdf
- http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/3ca4d498307e703d543d68c8bc7c4322/nowozojabufuparowo.pdf
- http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcc51e98d2---dikat.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf19a56523---41164936982.pdf
- https://alves.bg/ckfinder/userfiles/files/vawuwi.pdf
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4dea435111---vuwetitibom.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=prince+philip+brother
- 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_off0001f9e6.binb71746b03fc38aad416d6f1dad83f39d03f1ed5d21afcdf481cb06b435dd7426 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F9E6 | 20208 bytes |
font_01_sfnt_off00022cde.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x22CDE | 16792 bytes |
font_02_sfnt_off000244f5.bin18d2525794af2028921c9516b60efb275a5c816da0fbdf089fc695eb1622c788 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x244F5 | 10284 bytes |
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