MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristic firings point towards a phishing or malware distribution campaign, likely initiated via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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 https://coretry.ru/uplcv?utm_term=five+nights+at+freddy%27s+ultimate+custom+night+apk+download PDF link annotation
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd49bc3da7---kabave.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613e77567787d---jozopefitogelizerisaji.pdfIn PDF document text
- http://studiolegalebisantis.it/userfiles/files/gozojevugabi.pdfIn PDF document text
- http://antwerp-reefer-tournament.be/argt/files/welalidusefu.pdfIn PDF document text
- https://fonixkoncert.hu/upload/file/99702696981.pdfIn PDF document text
- https://mimpidia.com/contents/files/sevixelakolifarupeb.pdfIn PDF document text
- https://uzunlarpeynir.com/dursun/upload/files/84572890004.pdfIn PDF document text
- http://dralituncer.net/userfiles/file/xugonunewizuwigomusomawex.pdfIn PDF document text
- http://musicandyouapp.com/webupload/editorimg/files/fegejufudewexulijodadotak.pdfIn PDF document text
- http://talleresjpg.es/img/file/tawosezozadobulu.pdfIn PDF document text
- http://abarappresentanze.it/userfiles/files/49752952122.pdfIn PDF document text
- http://maremania.net/img_pagine/file/jasav.pdfIn PDF document text
- http://www.moyekolodin.com/files/motezenevuvem.pdfIn PDF document text
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8a00da110---55941155467.pdfIn PDF document text
- https://avukatwebsitesi.kocgrafik.net/upload/files/nemudupudozi.pdfIn PDF document text
- http://hongdanhaudio.com/luutru/files/44007775274.pdfIn PDF document text
- https://relaxbotanika.cz/ckfinder/userfiles/files/xezatosulaxaxupowiju.pdfIn PDF document text
- http://homeopathyhongkong.cn/files/lixumikezogusexapi.pdfIn PDF document text
- http://szguilong.com/userfiles/files/zagufitapoto.pdfIn PDF document text
- https://tims.ro/ckfinder/userfiles/files/2514632283.pdfIn PDF document text
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613387e16ff8d---44835482425.pdfIn PDF document text
- https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/notuxajex.pdfIn PDF document text
- https://hkfew.org.hk/ckfinder/userfiles/files/dovagukaximiluvedamuwomu.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_off0000ca61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA61 | 17244 bytes |
SHA-256: c0231b038f5d89c682a28c08b01131eaa79bcd28feaad478371b3d80b776d297 |
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font_01_sfnt_off0000f6db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6DB | 11536 bytes |
SHA-256: f9cdab87fa1d74b896d531f43a56cb3933f7798375e089492d3c9b9761f98722 |
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font_02_sfnt_off000111f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111F3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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