MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, and the document body was unreadable, but the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
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 http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/38050560153.pdf In PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff0300199c---vixifipozobaso.pdfIn PDF document text
- https://lescourailleurs.com/upload/editor/file/68174756164.pdfIn PDF document text
- https://phunhai.net/upload/files/novepifexeguvigin.pdfIn PDF document text
- http://vdavloeren.be/userfiles/files/94525812.pdfIn PDF document text
- http://colantuono.it/userfiles/files/9847448928.pdfIn PDF document text
- https://himalayanespresso.com/espresso_ckfinder/userfiles/files/59047138033.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/51835687930.pdfIn PDF document text
- http://cctsw.net/whly/up_files/FCK/file/20210903_121235_163.pdfIn PDF document text
- https://a-pointpro.com/cms/ckfinder/userfiles/files/pimabadenurexamek.pdfIn PDF document text
- http://thesecurityguardunion.ca/userfiles/files/vofikonuzawajiri.pdfIn PDF document text
- https://fivetc.net/uploads/files/37194039883.pdfIn PDF document text
- http://simsvizag.com/admin/uploadedfiles/file///negegibixilodalun.pdfIn PDF document text
- http://chinastom.ru/userfiles/file/kakipaxutasuk.pdfIn PDF document text
- https://stcc-sa.com/motakamel/Ups/files/zunulekezakovudixaw.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161368fe162856---43975969309.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/d90c22fb58f25ec5385ede59c18f679f/74157252324.pdfIn PDF document text
- https://krzczonowice.pl/gfx/file/58401760658.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/8l1pg86u9khuefnj9m0uuibl57/38857317615.pdfIn PDF document text
- https://nada70.org/userfiles/file/fodal.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1613dfd3f9499a---88801906577.pdfIn PDF document text
- http://sochi-vitrazhi.ru/ckfinder/userfiles/files/dotafezuzizatepod.pdfIn PDF document text
- https://electroagro.es/pub/files/najadilivawinikagejizeri.pdfIn PDF document text
- http://e-sportis.com/images/upload/rupoxizis.pdfIn PDF document text
- http://qkmedica.com/uploads/userfiles/file/96909655784.pdfIn PDF document text
- http://akbarestate.com/survey/userfiles/files/16082608180.pdfIn PDF document text
- http://hutbephottaihaiphong24h.com/upload/files/saronekifutogudege.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=instantaneous+rate+of+growthPDF 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_off0000d580.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD580 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ed92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED92 | 18760 bytes |
SHA-256: c6a239e6cda00bba7819206ca838f57fd4d02fead6085e79a875858ab3cb1e72 |
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font_02_sfnt_off00011edb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EDB | 10492 bytes |
SHA-256: 04a097207bb919a686d6b0e13f27af3a116e8b3ed31f9375b747c075eebf9045 |
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