MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. One such URL, http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7c2096d24---59293554079.pdf, is directly associated with the malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7c2096d24---59293554079.pdf In PDF document text
- http://lesen-und-schenken.de/userfiles/files/44043361452.pdfIn PDF document text
- http://aire-limpio.com/img/editor/file/65061604440.pdfIn PDF document text
- http://northwestpixie-bobs.com/clients/e/e1/e1941a3904c49320334fd90e0ed9e852/File/kibanefuvakajileg.pdfIn PDF document text
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/dad54524758908b425f9bea37b785d0d/55067625264.pdfIn PDF document text
- https://mavibusiness.it/file/47919566172.pdfIn PDF document text
- http://cementfeet.com/userfiles/file/ruluxuvixikajepasukadil.pdfIn PDF document text
- http://foxhill101.com/userimages/5742417708.pdfIn PDF document text
- http://wsp.pl/userfiles/file/konodetew.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/5c2c5d85aa3e3ae4a7539660317422b0/gopinevenunelo.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608471859819f---zeguvegajubo.pdfIn PDF document text
- http://angeladaniel.de/uploads/files/baginizogubav.pdfIn PDF document text
- http://elcampoeco.org/FCKeditor/file/katejezijopiza.pdfIn PDF document text
- https://lamaisonducoeur.ca/upload/editor/file/80425850224.pdfIn PDF document text
- http://simonide.org/userfiles/file/xiradokunutenimawobe.pdfIn PDF document text
- http://studiobonvino.com/userfiles/files/ritagekoxegumot.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/2905786f096059b512dfb834f94c6b94/tamodinetivusakobipuga.pdfIn PDF document text
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/b7vk1oc33v70452osomu4ff2uj/xifirujumifaxupafegadet.pdfIn PDF document text
- https://medtek.vn/storage/file/bepekezowevep.pdfIn PDF document text
- http://ahxxzx.com/userfiles/202105/file/69462013727.pdfIn PDF document text
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd1e43a0ce---kagofifinezagobifutiso.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a245b228f3b---kitujorefu.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=printable+house+rooms+worksheetsPDF link annotation
- https://tes-sys.com/uploads/ckfinder/files/20210724/16270666141993.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_off0000cb01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB01 | 16560 bytes |
SHA-256: 139717eb670e35023585d915331c8abf74f2319c99fbc341593e63453070922a |
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font_01_sfnt_off0000f4c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4C6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010cdd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CDD | 10792 bytes |
SHA-256: c51388e62f33d691edee05343653862d7b44b888a1e7a8563cc2e90656379f21 |
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