MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, further obscuring its true intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://inwebjor.ru/uplcv?utm_term=multiplayer+game+apps+for+android PDF link annotation
- http://www.ctnphrae.com/ckfinder/userfiles/files/56428211058.pdfIn PDF document text
- http://hhoasis.org/app/webroot/img/fck/file/97154857026.pdfIn PDF document text
- https://onecre.com/images/content/files/sebagoz.pdfIn PDF document text
- http://vpsystem.com/files/fck/35931092325.pdfIn PDF document text
- http://olynskiconstruction.com/pics/file/dukimapevufevinofipo.pdfIn PDF document text
- http://medi-sen.com/files/files/7199706614.pdfIn PDF document text
- http://floridadressyourhome.com/uploaded_files/userfiles/files/riwarudowagikivubeguv.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0ed9b5438cf04999ffea701037a340a6/saludulopuxelefelekejowu.pdfIn PDF document text
- http://ebiocell.com/uploadfile/file///2021090711182269.pdfIn PDF document text
- https://olterus.org/contents/files/nibutuzujulivusiwifanamer.pdfIn PDF document text
- https://saunadlaciebie.pl/userfiles/file/tizebu.pdfIn PDF document text
- http://salonorganica.ru/upload/files/17149643835.pdfIn PDF document text
- http://aven.su/userfiles/file/47423828195.pdfIn PDF document text
- https://sankaibearing.com/userfiles/files/kisomapivawobasixawug.pdfIn PDF document text
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/l8hkce3dvcpr2h5fkkut6vgh17/wekibesiziputi.pdfIn PDF document text
- http://directartdeal.com/uploaded_files/userfiles/files/vuwefaluzapiguwud.pdfIn PDF document text
- http://fine-trading-knotwork.de/uploads/media/60054584480.pdfIn PDF document text
- https://j26clean.com/upload/files/84768818289.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613629d5e0197---76284402915.pdfIn PDF document text
- http://sd-admin.fazendapenaazul.com/ckeditor/uploads/files/781199587.pdfIn PDF document text
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16133a885d0d8e---ligut.pdfIn PDF document text
- https://www.verimevzabavu.cz/ckfinder/userfiles/files/95753688397.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/a4db3d057c76f58a9edfe33868a38648/menuxawemizi.pdfIn PDF document text
- https://cakamuzejs.riga.lv/ckfinder/userfiles/files/semetoxepawirajamexopixe.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e56c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE56C | 18104 bytes |
SHA-256: f6c9667fc9493db5b6ce78dcede737e185ba1fa04f62347ec57af170ff102d16 |
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font_01_sfnt_off0001141f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1141F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012c36.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C36 | 11048 bytes |
SHA-256: a4e2b45dc392adf2895682b45e5f11512e1c5594dfe32321613c3d2214c3ae2a |
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