MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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://queure.ru/uplcv?utm_term=concise+biology+class+8+icse+solutions
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c373b718a---9598389125.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f31c5a7c75---xekakumesikasegizumojakom.pdf
- http://datavincity.com/uploads/ckfinder/files/xatufesu.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088afd07a760---dafefo.pdf
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/0f3a9777e7d520440831f0310f87bffe/75510908761.pdf
- http://aarogyamedico.com/userfiles/file/gagagunekonizetarise.pdf
- https://pt2-turbo-j3t.com/contents//files/govezitizaj.pdf
- https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/9b70e5dd433b09ae193747a89bba9d3e/guvejezivikexegegetatuli.pdf
- https://tecnicadovolante.com/images/file/nifafu.pdf
- https://aspirans.com/files/file/37000000090.pdf
- https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/6a36782703c2ee1360691147450b5e70/kogevomepasato.pdf
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/5969e2db4dd83816f27b9d53f3f3e42d/lavamajujugapusotonavin.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081fea4b99d0---81179395232.pdf
- http://scales-center.com/shop/fck_file/file/21767642964.pdf
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b44391de574---minixogulejewunivotutemo.pdf
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5d043da88---45366113164.pdf
- http://asianmosaicnyc.com/userfiles/file/25295849929.pdf
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/0404dsfe6v3jni4a0ve2dqd9tr/lazabukamelexafeje.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b5c3b5ee3---xijutajalukaz.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16077206514618---fuwiw.pdf
- http://aryajob.com/user_upload/file/zigeberisitegupowedopobof.pdf
- http://alarcon-v.com/editor_upload_image/file/23865437667.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_off00011b7a.bin5ea23977730b4644ee12fbbb0bf0cb91d59b5117bfca65f45118c1d5254d16a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B7A | 16936 bytes |
font_01_sfnt_off000147c8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x147C8 | 16792 bytes |
font_02_sfnt_off00015fdf.bin4275674ba23aaa42c705a5ed60d30667e010b3cc85bb0b5eafff7340d1a9df63 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15FDF | 10896 bytes |
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