MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample contains embedded JavaScript, a common technique for exploiting PDF vulnerabilities or redirecting users. The presence of numerous external URIs, many pointing to potentially disposable domains and exhibiting link farm characteristics, strongly suggests a phishing or malware distribution campaign. ClamAV detection and ML classification further confirm its malicious nature, likely serving as a lure to a malicious site or a downloader for a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 7
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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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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 http://www.toptehnik.si/images/40600001366.pdf In PDF document text
- https://shriramsteels.in/public/ckfinder/userfiles/files/6300193112.pdfIn PDF document text
- https://semut73.com/contents/files/vupenak.pdfIn PDF document text
- http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/tewikotugigodida.pdfIn PDF document text
- http://www.ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/fivovasodaxifititas.pdfIn PDF document text
- http://marinda.ru/pics/images/file/xoxobu.pdfIn PDF document text
- https://albawadiroad.com/userfiles/files/megowifedoxofezanukitike.pdfIn PDF document text
- http://yournamebadges.com/withyourdog/cms_uploads/file/jakofibosebikiduvif.pdfIn PDF document text
- http://hotelbellevuepalermo.com/userfiles/files/rumepiwasopuziwo.pdfIn PDF document text
- https://ovistar-dz.com/ckfinder/userfiles/files/lebufuliwuvulotixafom.pdfIn PDF document text
- http://carbonelite.ru/file/64840832315.pdfIn PDF document text
- http://0048.pl/48files/file/pifetivavom.pdfIn PDF document text
- http://e-photo.lv/ckfinder/userfiles/files/boluwulowotiwa.pdfIn PDF document text
- http://ncfc.com.tr/ckfinder/userfiles/files/81819294777.pdfIn PDF document text
- http://cuacuongiare.vn/upload/files/ruvugiwerixafavoxuti.pdfIn PDF document text
- http://chiangmai-clean.com/user_img/files/gikilugadale.pdfIn PDF document text
- http://pogologistics.com/ckfinder/userfiles/files/falovaberi.pdfIn PDF document text
- http://myphamnanyno.com/luutru/files/forujot.pdfIn PDF document text
- http://eko-uklid.com/files/file/fiwaxajexunuleva.pdfIn PDF document text
- https://optical-axis.com/uploads/files/202109042015586934.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff4a561646---fovupamisoduwutemafoj.pdfIn PDF document text
- http://thuduchouse.vn/pics/file/7122349505.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=the+four+resources+modelPDF link annotation
- 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_off0000b1fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1FD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA14 | 10348 bytes |
SHA-256: eee5f937e5da07a52c8eb8c669648a82059227ee9b356c37ae91e8434aae0cd3 |
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font_02_sfnt_off0000e173.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE173 | 15672 bytes |
SHA-256: 3b830c631b3e0fc260185a3dc4e3155af3c36e36b3cd17f948c6fef1d84f1c66 |
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