MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
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 CMS uploads or disposable hosting. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/388j6lqumlmd6etacai2ngreqt/12406045471.pdf In PDF document text
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/3gej6egibf8etmtam32fu02p31/womiwazofujofedeburik.pdfIn PDF document text
- http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/45005283189.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/onur3ridi8t6dge4702nkqnma4/39602534376.pdfIn PDF document text
- https://bravo-hk.com/userfiles/file/94749731609.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7c4113585---kefiwuzogabutobut.pdfIn PDF document text
- http://amirafouad.com/uploaded_files/file/miluraxafo.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160afdc6427059---vovaxakejutodij.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609112770dd8b---17789553799.pdfIn PDF document text
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/516f679tfu37uu2ou83lmgdkk1/93839196751.pdfIn PDF document text
- https://aviatroglo.fr/IMG/file/xifefizogalutomodow.pdfIn PDF document text
- http://ytovietnam.net/ckfinder/userfiles/files/pakorebo.pdfIn PDF document text
- http://stlukesmn.org/clients/17773/File/vodimise.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9471ae7d6c---nonezekogiwetal.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d39a9e4352---wekotilapilarelutamazir.pdfIn PDF document text
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/9d4fd8528af485d758bfce40d4eebbc0/xujoxubadizuz.pdfIn PDF document text
- http://aexpress.lv/index/images/up/file/nadupelufoxul.pdfIn PDF document text
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072faf8bda17---41386513956.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/v1qt54h24v2g24gfon6v35hl14/sorarufokegisepivo.pdfIn PDF document text
- http://uleshuzatshop.hu/files/file/fovizat.pdfIn PDF document text
- http://toeicspeaking.net/_UploadFile/Images/file/84201354526.pdfIn PDF document text
- http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/jusezifedo.pdfIn PDF document text
- https://kurek-rowery.pl/user_pict/file/953664.pdfIn PDF document text
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b7da77b951e---60519047541.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+apply+work+permit+after+studyPDF link annotation
- 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_off00011778.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11778 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012f8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F8F | 10936 bytes |
SHA-256: 89f23f935911607c5944694eb96f580221c35ea5a46e9b7d5e5ba39ffb13673b |
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font_02_sfnt_off00014902.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14902 | 17148 bytes |
SHA-256: bc1e824a6922c15a80ad3017aca1310aa4d4986cfd1dc071b5df7560866a01e4 |
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