MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. Heuristics indicate the PDF functions as a link farm, containing numerous external URIs pointing to disposable hosting, with one notable URI being https://crysiq.ru/uplcv. The presence of embedded JavaScript, though not directly analyzed for specific actions, suggests potential for malicious script execution within the PDF context. The overall structure and numerous links point towards an attempt to direct users to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 5
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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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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://crysiq.ru/uplcv?utm_term=my+heart+will+trust+in+you+hillsong+lyrics PDF link annotation
- http://valencia.thepokeluau.com/uploads/files/nojelajebu.pdfIn PDF document text
- https://nstoplana.rs/ckfinder/userfiles/files/jezizosatow.pdfIn PDF document text
- http://enslev-anlaegsservice.dk/userfiles/file/gugiwapurakitunaso.pdfIn PDF document text
- https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/wojuwovalajis.pdfIn PDF document text
- http://fsoa.cn/userfiles/file/zukefevinepaf.pdfIn PDF document text
- http://grotech.in/userfiles/file/vusiragu.pdfIn PDF document text
- http://old.smartplus.pl/ckfinder/userfiles/files/fetipamukojefosusaviri.pdfIn PDF document text
- http://phutunggiahungoto.com/uploads/files/83845594766.pdfIn PDF document text
- http://caythuocnam.org/images/files/52553034067.pdfIn PDF document text
- https://eastmanllc.com/ckfinder/userfiles/files/57489831332.pdfIn PDF document text
- http://k-sta.kr/FileData/ckfinder/files/20210926_995B988A016401D4.pdfIn PDF document text
- https://jfava.gemwareserp.com/userfiles/file/66775049848.pdfIn PDF document text
- http://marathon-gexin.com/Uploadfiles/files/93286242667.pdfIn PDF document text
- http://csc025.com/userfiles/file/20210911152331_4k48ej.pdfIn PDF document text
- http://contua.org/userfiles/file/kisewivijopevelagedaxa.pdfIn PDF document text
- http://digitalpolicycouncil.org/imagenes/file/narosetoxas.pdfIn PDF document text
- http://juha.be/_files/file/87734992689.pdfIn PDF document text
- https://profitaler.com/UserFiles/file/89873776271.pdfIn PDF document text
- http://minuspk.ru/minuspk.ru/userfiles/file/siguku.pdfIn PDF document text
- http://newgrids.com/userfiles/file/48373922812.pdfIn PDF document text
- https://xylemleads.com/userfiles/file/dolakunipomesirubasalibiw.pdfIn PDF document text
- https://garmin10.ddbseven.cl/userfiles/file/radomutojigorofo.pdfIn PDF document text
- https://hohsingfiber.com/ufiles/files/6828244410.pdfIn PDF document text
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16153579a00a10---7633287023.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_off0000b8aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8AA | 16836 bytes |
SHA-256: ec6f0e2e959c416810d16d5d959775c82f770da517bb39cf71b643d73e36bea0 |
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font_01_sfnt_off0000e420.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE420 | 10804 bytes |
SHA-256: b6169897246de56533da2aa7dff3ae868ccaa591f9311a6c27bd9fe15bc48331 |
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font_02_sfnt_off0000fd15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD15 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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