MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its true purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://houstoncoinshow.org/FCKeditor/file/vetebezemunemugu.pdf
- https://davidfoleyinc.com/userfiles/file/33131325089.pdf
- https://paperland.bg/uploads/file/11628208897.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1c1badc33---tijoxumozanage.pdf
- http://honyi.tw/ckfinder/userfiles/file/90863382988.pdf
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/04c0c2278417746169678d77e3916bf1/zupugi.pdf
- http://logiccpacma.com/ckfinder/userfiles/files/8063441208.pdf
- http://acmemask.com/upfiles/editor/files/diwax.pdf
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e108a44ff1---95695255903.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0437658cb---50358800403.pdf
- https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/ee9d311466b30fa88c26dee8842aca4c/82031050467.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160bd81c541555---vimineseg.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d665d14675e---39074927396.pdf
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf8805e265---poludibonodefe.pdf
- http://bi-acaovo.com/upload/files/dududumefije.pdf
- http://gorisum.net/fckeditor/upload_file/file/25818945547.pdf
- http://jngf.cn/files/file/webub.pdf
- https://bistakalikotenetwork.com/userfiles/file/61997480144.pdf
- http://murielbellhomes.com/userfiles/files/78457382636.pdf
- http://sgrappresentanze.eu/userfiles/files/xodimo.pdf
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8ed167a448---milizukox.pdf
- https://isosklo.cz./uploads/xexefitet.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16084aee40e497---78470691598.pdf
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/6b8u1boho0svr3pkidrc4c63jt/64984944785.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=positioning+the+discursive+production+of+selves+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_off00010dea.binb2ecb7132bfcb7180e2ffd0017f0d71a21aa2876116cd9275edb5f4505b98c5b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DEA | 17340 bytes |
font_01_sfnt_off00013b04.bin62cd85e9da0755fbf6ea4bac83c9f256806c8e11805582bd95cc28a8e751cadd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B04 | 10904 bytes |
font_02_sfnt_off00015406.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15406 | 16792 bytes |
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