MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external links, many hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution campaign. The embedded JavaScript likely facilitates the execution of malicious actions or redirects the user to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.8010
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://ketchas.ru/uplcv?utm_term=android+emoji+creator PDF link annotation
- http://apart1day.ru/file/lifelunikinemexevorafanek.pdfIn PDF document text
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/56046bca6dfc2eb91c63896905aeb9aa/maxuvetixik.pdfIn PDF document text
- http://thaicockstar.com/ckfinder/userfiles/files/sikurisotokupaf.pdfIn PDF document text
- http://hb-hospital.com/file_upload/fck_upfile/file/36711375435.pdfIn PDF document text
- https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/hged44u5vdhsgvnf6pmru8ku00/3288601705.pdfIn PDF document text
- http://phuongsen.com/img-chamthi/files/96867865658.pdfIn PDF document text
- http://ttmm.co.jp/ckfinder/userfiles/files/xuwemaduxudesuj.pdfIn PDF document text
- http://lexus-custom.com/js/upload/files/vaxebijasuxina.pdfIn PDF document text
- http://yevres.fr/ckfinder/userfiles/files/wibofeledajorizumu.pdfIn PDF document text
- http://webinaris.org/ckfinder/userfiles/publics/files/45743388292.pdfIn PDF document text
- https://iqmuseum.mn/uploads/files/56733397572.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/943f3dfd4d2f693a226e5b8734a6cb46/4616853931.pdfIn PDF document text
- http://automsystem.com/UploadFile/file/20210902205508275.pdfIn PDF document text
- http://panda-es.tokyo/yamituki-n/uploads/files/96042966060.pdfIn PDF document text
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/temaxidukivesarides.pdfIn PDF document text
- http://z-sinpro.com/upload/files/nukebo.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161350a95b82d2---38513178258.pdfIn PDF document text
- http://king-pro.com/userfiles/files/zonusudisazopusexejuli.pdfIn PDF document text
- http://hstechno.com/userData/ebizro_board/file/wifevimovagotimilekaze.pdfIn PDF document text
- http://cavusofis.com/images_upload/files/semisizuludojutunawog.pdfIn PDF document text
- http://thuduchouse.vn/pics/file/devibetafugamumameb.pdfIn PDF document text
- http://fosterfreezesantarosa.com/uploads/files/50738433184.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138eb210e2ff---veretukukupamuga.pdfIn 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_off0000b581.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB581 | 10428 bytes |
SHA-256: ceed724664977ec0d9cad10c6a93ed5ba68b09748dd5589803399752bfcdf482 |
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font_01_sfnt_off0000cd16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD16 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e528.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE528 | 14352 bytes |
SHA-256: f3fb868fc6c4f3ec2216cbed4b4a89a45c209a2b028e79bc3341a03c5f6445fa |
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