MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. The presence of numerous external URLs, many of which are on disposable hosting and appear to be part of a link farm, strongly suggests a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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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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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://laborke.ru/uplcv?utm_term=concentration+against+time+graph PDF link annotation
- http://baoveantam.info/upload/files/39185257448.pdfIn PDF document text
- http://sonhanint.com/uploadpic/sun/files/202109032132156264.pdfIn PDF document text
- http://belgium-ex.com/images/blog/file/5598840328.pdfIn PDF document text
- http://abwnickersonplaza.com/uploads/files/82222313332.pdfIn PDF document text
- http://pattarasawat.com/ckfinder/userfiles/files/vukuzejirovemo.pdfIn PDF document text
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/62fa804b64103110cc43a42a3db0394a/notuzalirofijemomomefovip.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/bulelomopituwuxuloditub.pdfIn PDF document text
- https://aldurra.ly/images-editeur/img/file/4496104633.pdfIn PDF document text
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320f0e6f22d---jinibibevomesukup.pdfIn PDF document text
- https://hasekei.jp/userfiles/file/redokakuxuvol.pdfIn PDF document text
- http://kielcenoca.pl/files/file/52413033699.pdfIn PDF document text
- http://jawarakreasi.com/file/ruwerepu.pdfIn PDF document text
- https://mk-promotions.com/ckfinder/userfiles/files/31413271281.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1615b736770459---gutalebuwifufuwolasajupi.pdfIn PDF document text
- http://planet-for-events.de/userfiles/file/50138006244.pdfIn PDF document text
- http://3234.us/data/attachment/file/28424206015.pdfIn PDF document text
- http://cukiernia.eu/upload/files/sowagabewudegagetuzemogod.pdfIn PDF document text
- http://w-mill.jp/images/file/bawimojapilul.pdfIn PDF document text
- http://veronikavilla.hu/userfiles/file/10521589514.pdfIn PDF document text
- http://ownlines.com/upfiles/file/40816254621.pdfIn PDF document text
- http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/varaxav.pdfIn PDF document text
- https://mylin.in/ckeditor/ckfinder/userfiles/files/kawawikiginudemawizunid.pdfIn PDF document text
- http://areopag-group.ru/sites/default/files/uploads/wubifavuwupujikotuxemi.pdfIn PDF document text
- http://bazoolwddd.specialty-match.com/upload/files/konesidef.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_off0000d79b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD79B | 19012 bytes |
SHA-256: 7dc9cc7289b50736138105d75eea1200d5619cac9d0cc7a62f3608fe32405cbb |
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font_01_sfnt_off0001094a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1094A | 10808 bytes |
SHA-256: a804498b4aa827c4b220f4bedae3d37f78e5a785ab39dff4f17a680b6b86b339 |
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font_02_sfnt_off0001220c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1220C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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