MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites, suggesting it is part of a link farm designed to redirect users to malicious content or phishing pages. The presence of external URIs and the overall structure point towards a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://catamma.ru/uplcv?utm_term=rna+polymerase+ii+is+responsible+for+transcription+of PDF link annotation
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160801c4b3be38---kilaletavagipikoseforor.pdfIn PDF document text
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2ee5f11b3---nugugevoposiwivexido.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160983066762cd---11585597501.pdfIn PDF document text
- http://wecans.net/_UploadFile/Images/file/65158476453.pdfIn PDF document text
- http://halaljones.com/uploads/files/tupob.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/8b0114f35093fd0498473cb7b1f5069e/xutowu.pdfIn PDF document text
- http://www.golfusa.be/userfiles/files/sasebamukusozezizek.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc236069e0---33626654961.pdfIn PDF document text
- http://lmyc.net/clients/875386/File/kifebitipir.pdfIn PDF document text
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b02b393a6---42621154174.pdfIn PDF document text
- http://cen7dias.es/userfiles/files/luwameduvupenidokizexumi.pdfIn PDF document text
- http://vit-physio.de/file/15811685440.pdfIn PDF document text
- http://savaksangida.com/resimler/files/bunatojaz.pdfIn PDF document text
- http://tablica-nieruchomosci.pl/uploades/fckeditorfile/rubakomatudodukudevifo.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/160282945d3809cdf6f7f56fcd4b60cd/xipuguzuzagomekezipexu.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/qecsdkfu2lfagvchrmd6vrt7p8/dalexibefepisilen.pdfIn PDF document text
- https://aykutemlak.com/upload/ckfinder/files/migoli.pdfIn PDF document text
- https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/p3qobnt2c25gs14npmvikd6sjj/wogodurufewiboxutazek.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/47bc0a77b3f81c9b60b959a9fe382280/walusarovotazelido.pdfIn PDF document text
- http://tasarimak.net/ckfinder/userfiles/files/sedilamudenu.pdfIn PDF document text
- http://www.aadhar-interior.com/userfiles/file/famujumulorirepodagedexi.pdfIn PDF document text
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8ecb76a54---verelojabisujasedi.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076dc8b4d740---5146281494.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160810f5468f13---27443521861.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_off0000e838.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE838 | 16916 bytes |
SHA-256: 8e8667e575feb7f49ac729b779020f29a650f79daf1c3379c86116919bfeced5 |
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font_01_sfnt_off0001136b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1136B | 10940 bytes |
SHA-256: 964157b628f7e835fdc729dce3341097dcf48cb48645f245359ee4d08309e8aa |
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font_02_sfnt_off00012c9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C9D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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