MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF is identified as an image-only lure, typical for phishing campaigns. It contains numerous embedded URLs, suggesting it's part of a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to facilitate the download of a second-stage payload or lead to a phishing page.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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=medical+biochemistry+book+by+chatterjee+pdf PDF link annotation
- http://kutscher-customs.de/gfx/userfiles/files/56508623909.pdfIn PDF document text
- https://yesilkoyluleriz.biz/resimler/files/vilefinoxijasivu.pdfIn PDF document text
- https://kimtuong.vn/isc/public/files/fckupload/file/wawegadivufopurikevavozas.pdfIn PDF document text
- http://cudicio.it/images/file/61814702375.pdfIn PDF document text
- http://geobigoni.it/userfiles/files/28606433772.pdfIn PDF document text
- http://vuonlan.vn/data/upload/files/relifekanuzuzusid.pdfIn PDF document text
- http://htygroup.com/upload/files/42731969243.pdfIn PDF document text
- http://peoplefineart.com/assets/202109/files/20210910121532253235.pdfIn PDF document text
- https://himalayanwanderer.com/himalayan/userfiles/files/59601608230.pdfIn PDF document text
- http://yangs-ns.com/ckfinder/userfiles/files/20210911064615.pdfIn PDF document text
- https://5udua.com/contents/files/55346435306.pdfIn PDF document text
- https://cepatdaftargroup2.com/contents/files/44792120274.pdfIn PDF document text
- https://middletonchambers.com/ckfinder/userfiles/files/rafulinovatogolexavaper.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e70f3b7e4---51215914892.pdfIn PDF document text
- https://www.nstoplana.rs/ckfinder/userfiles/files/zijipavir.pdfIn PDF document text
- https://betalinktech.com/blmedia/file/tuniridigavoroxuganupubod.pdfIn PDF document text
- http://bwemfjhjk.friend-match.com/upload/files/tejaxan.pdfIn PDF document text
- http://gocchame.vn/app/webroot/img/uploads/files/94145079230.pdfIn PDF document text
- https://astefin.ro/ckfinder/userfiles/files/32887004571.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137808d8e197---62718514452.pdfIn PDF document text
- http://chonburi33.com/userfiles/file/84557236356.pdfIn PDF document text
- https://learnrkb.jugalbandiresearch.com/ckfinder/userfiles/files/80602110544.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_off0000ad1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD1B | 13944 bytes |
SHA-256: e6659dd2c641979c6db2efec15deb75839209aebe6980f095108b1f83c8302ad |
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font_01_sfnt_off0000cf51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF51 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e768.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE768 | 11248 bytes |
SHA-256: c1b8cf7100b65c4bf73c273343ba3b2155ccb0052e666d24877a49885db37348 |
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