MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to numerous compromised WordPress sites and other domains. These links likely serve as lures for phishing attacks or to distribute further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://cructi.ru/uplcv?utm_term=how+to+compress+pdf+file+online+free
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160debd724b0f2---selefefisaluz.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808f80a6cfb---webuselixegelal.pdf
- http://alhouti.com/userfiles/file/20650784915.pdf
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1f5bb3a69fa75af15781e58cc903a72b/18817542694.pdf
- http://jatyn.cn/upfiles/202105/file/1621690213.pdf
- https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609cdea949964---figusotomedubo.pdf
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/3dbcd2d9ce35fcdb6215241fbccb27cc/79692964293.pdf
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c0a268114---99097217279.pdf
- http://bhsclassof70.com/clients/a/ac/acf0241a72c9eb28a719a759cf8a4748/File/pusewoxoluvezij.pdf
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c72f5e16a56---wipureledusubokuten.pdf
- http://nesemlak.com/test/images/uploads/files/gibewetafuju.pdf
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/830c40afa1c1c7d134c784d361f90314/14856247937.pdf
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/plgf6vdh0gl36tf9u1mofsle8i/dubaviturifevi.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16078c9f72eae7---zobage.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/e208fb84d2de1df56e729dd0c789ac34/85946952651.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76f2b9c186---61041079879.pdf
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160835c6c4d132---wazunafuje.pdf
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/oegtl4t1b28euu572qt8it0gap/67616006750.pdf
- https://prtl.pl/userfiles/file/89383402324.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d9ee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9EE | 16792 bytes |
font_01_sfnt_off0000f205.bincc4fdc761793dd2288a369293258fdf9cb05a217f375c595c8aaf47ecb8c8384 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF205 | 10696 bytes |
font_02_sfnt_off00010a7e.bine3a1ca7fbcde87b6e2bc585668cff1a50452d2a09c95c546c16e9f90aebd6500 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A7E | 1636 bytes |
font_03_sfnt_off0001124b.bine097a9b653e3e361c07b524ebede5e2c3b9b972a0abb7d275ce0ccf6c2f9f976 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1124B | 17672 bytes |
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