MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that point to various domains, many of which are associated with compromised WordPress sites or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, but the primary attack pattern involves directing users to external, potentially harmful, websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
Heuristics 5
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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://pistant.ru/uplcv?utm_term=chemical+properties+of+amino+acids PDF link annotation
- http://studioesflores.pl/obrazy/file/tadeboluxonazogawunoxar.pdfIn PDF document text
- http://auto4-spb.ru/public/images/ckfinder/files/nezugazonikisobemetole.pdfIn PDF document text
- http://greentreeprep.com/cote_dor_import/admin/ckfinder/userfiles/files/gudavegufelerajuzofunu.pdfIn PDF document text
- https://endobible.com/userfiles/file/52139169784.pdfIn PDF document text
- http://location-appartement-venise.com/italie_documents/files/xijikugimabedetebagusasu.pdfIn PDF document text
- http://tmkb.org.tr/ckfinder/userfiles/files/24311657931.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161439c9686f36---petuwokofifemopil.pdfIn PDF document text
- https://doina.md/fckeditorfiles/file/jitoj.pdfIn PDF document text
- https://fceresources.com/ckfinder/userfiles/files/bigegemanufovi.pdfIn PDF document text
- https://sailstudy.in/ckfinder/userfiles/files/saxedifip.pdfIn PDF document text
- https://shreenatharcade.com/userfiles/file/tumadiralolivutufalixoliw.pdfIn PDF document text
- http://eau-msu.ru/ckfinder/userfiles/files/jexiridawaweva.pdfIn PDF document text
- http://youil.org/userData/board/file/kasilenubitofadapulejunix.pdfIn PDF document text
- http://vitacanes.com/uploads/files/lisijedigo.pdfIn PDF document text
- http://kajo-frings.de/userfiles/file/39440051036.pdfIn PDF document text
- https://regaluxiluminacion.com/uploads/assets/file/39481956215.pdfIn PDF document text
- http://nyitotthetvege.kastelyszallodak.hu/userfiles/files/51961801963.pdfIn PDF document text
- http://diennuocdanang.com/uploads/image/files/15727847950.pdfIn PDF document text
- https://taksis.lv/taksis/userfiles/file/nozufofebulefuma.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614edc8d733e6---50888709267.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/275db74b8cfd889ae6930bbaf2daaa70/98496799665.pdfIn PDF document text
- http://webs123.com/userfiles/file/4429342963.pdfIn PDF document text
- http://zpkprzemysl.pl/ckfinder/userfiles/files/rijifamekaxowujelavixe.pdfIn PDF document text
- http://www.urbanwaterways.info/files/korusa.pdfIn PDF document text
- http://bbpcosmetics.com/admin/upFiles/2021-9/file/89642333442.pdfIn PDF document text
- http://tiendanatacion.com/noticias/files/19838553554.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_off0000b62f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB62F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ce46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE46 | 10916 bytes |
SHA-256: a3e382d3259ec242c958b59cd8fad728d88439caef140ee7c5e05c6bd3c45921 |
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font_02_sfnt_off0000e758.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE758 | 16620 bytes |
SHA-256: a83497d3d637e17976781dcbcabf7acaddeb059c36e9ec55e52ea8bb376e5636 |
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