MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated high maliciousness. Heuristics reveal it functions as a link farm, with many URLs pointing to compromised WordPress sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests it's designed to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://haps.company/wp-content/plugins/super-forms/uploads/php/files/mbj5dog31p9df05mb7so20e6t6/tebabajunawimaworu.pdf
- http://csc028.com/userfiles/file/20210703125625_7jc6c5.pdf
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/67701d420032d2fb77499ee55bf2f296/55306292269.pdf
- http://tomaszskiba.com/userfiles/file/19424280508.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0c793324b---18216107884.pdf
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de81b3184c9---zoxowix.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/4bf3g1ordjn94clf7oq60t4ivf/poxobiwifen.pdf
- http://adabaskimerkezi.com/upload/file/61902608789.pdf
- http://gw73patriots.com/clients/1/1e/1ed986c9d410becccfd9995a8318e329/File/rikanukudutowabos.pdf
- http://soft-pro.hr/upload/datoteke/wupelamonororazuve.pdf
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/22339d96dd9ce2db93f60c1b4e3385df/75136093402.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/fcd918272f7a0448ada4385e5dd0fdf2/96105722783.pdf
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03ad4ee5ec---41138947990.pdf
- http://dailycan.com/userfiles/files/juvexepu.pdf
- http://travelport.pl/userfiles//file/68597744172.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c6576ac146f---jakusotu.pdf
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094b77c5ed2c---ranizu.pdf
- https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/d8a3f2eb91ecc81b21e0ad2cdfb9c04a/92470715179.pdf
- http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/pepitidexawukunoxikomuzuj.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/4e5dd3032fc155000c77d1f2e986fbad/3050878277.pdf
- http://narnivet.com/userfiles/files/24393594001.pdf
- http://bassbasement.org/userfiles/file/bipiminimoganidodejitig.pdf
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3fa77a310---legurexen.pdf
- https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/d96e1cdeddea432f6d343935ce91d655/revepuwi.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=6ft+to+inches
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/886a9ecccf880ac64d9ea44dd48d43f0/foxizivizomugofuritorox.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_off0000ffaa.bin5f102cfe603aa1809aad9fa5bfbc85860d2b1c7ab647c9d2a6e343d786c67f23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFAA | 17488 bytes |
font_01_sfnt_off00012d51.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D51 | 16792 bytes |
font_02_sfnt_off00014568.bin5ee4e2ed0a22479b83ceceafba3f56d43f0476dadd5483996a3079ca661adc32 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14568 | 10196 bytes |
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