MALICIOUS
144
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a high-confidence ML classifier flagged it as malicious, consistent with ClamAV's detection of Pdf.Phishing.Trojan. The embedded URI and heuristic firings indicate a phishing lure, specifically an image lure linking to an SEO redirector for a fake download. The primary IOC is the redirector URL, which likely leads to a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.6297
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://smidgel.ru/uplcv?utm_term=ecology+study+guide+worksheet+answers PDF link annotation
- http://igabana.com/upfolder/e/files/20211005062640.pdfIn PDF document text
- https://dom4m.com/userfiles/files/68952118142.pdfIn PDF document text
- http://topspeed4wd.com/ckfinder/userfiles/files/wozoritosotifijitemabesub.pdfIn PDF document text
- http://majstrissmt.eu/www-data/file/talowajudijinabogofij.pdfIn PDF document text
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/v3fd1ajd6om5l4h9sd4v07onhi/2606363932.pdfIn PDF document text
- https://huangs.tw/uploads/files/202112041927215528.pdfIn PDF document text
- https://goodluckfishing.com/ckfinder/userfiles/files/2846373649.pdfIn PDF document text
- https://www.massola.com/assets/themes/sbadmin2/ckeditor/kcfinder/upload/files/wipuxitavezileweg.pdfIn PDF document text
- http://niktid.ru/userfiles/file/42343727344.pdfIn PDF document text
- http://studiopignotti.it/userfiles/files/bebizeduraguvogumojoxu.pdfIn PDF document text
- https://hiroyoung.com/data/files/16317662681.pdfIn PDF document text
- http://ahdjcm.com/upload/files/wamogaputizijuzabaxixipag.pdfIn PDF document text
- http://dakmoto.cz/obrazky/file/64819618600.pdfIn PDF document text
- http://vet-spb.com/userfiles/file/pirojofupavajuduxezepozak.pdfIn PDF document text
- https://cpc-serbia.org/js/files/voxufiwip.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/vonujoko.pdfIn PDF document text
- https://safetyhanoi.com/userfiles/file/kegivukavom.pdfIn PDF document text
- https://norservis.com/files/files/pobamejuxofumu.pdfIn PDF document text
- http://xn--80aab8aioy.xn--p1ai/userfiles/file/dobajit.pdfIn PDF document text
- http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/zurev.pdfIn PDF document text
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/a512f86ab2a5c69cd0e4a495e067f29d/87102710341.pdfIn PDF document text
- http://kondicionery-fryazino.ru/upload_picture/file/16835153391.pdfIn PDF document text
- http://julianina.de/upload/file/71602240261.pdfIn PDF document text
- http://apartmany.cucoriedka.sk/data/files/dogikowowodupi.pdfIn PDF document text
- https://www.campacinter.com/image/upload/File/83384099176.pdfIn PDF document text
- http://mentoslaci.hu/admin/kcfinder/upload/files/nukopana.pdfIn PDF document text
- https://ccs-corporation.com/ckfinder/userfiles/files/50529543834.pdfIn PDF document text
- http://www.valathors.com/ckfinder/userfiles/files/72813752037.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_off0005b9e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B9E9 | 16416 bytes |
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336 |
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font_01_sfnt_off0005d08d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D08D | 11024 bytes |
SHA-256: 03b88147dbd6b78c52c45665070e19b3431894ead6466c3efa0cb32816912a7d |
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font_02_sfnt_off0005ea00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EA00 | 18444 bytes |
SHA-256: 431bc436daffe6993efe5d85516d8081013d9e61dc8385420c24ca394acf81d7 |
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