MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document exhibits characteristics of a phishing lure, including an image-only design and an embedded JavaScript stream. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing attempt, where users are prompted to call a number for fake issues like billing disputes. The presence of embedded JavaScript and numerous external URIs, some pointing to potentially malicious domains, further supports this assessment. The ML classifier and ClamAV detection also indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 8
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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-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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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://www2.grupoksl.com.br/js/ckfinder/userfiles/files/pigoje.pdf In PDF document text
- http://greenflameenergy.com/userfiles/file/41305152496.pdfIn PDF document text
- http://airmon.hu/images/files/mugep.pdfIn PDF document text
- https://next-engineering.com/userfiles/files/dirige.pdfIn PDF document text
- http://ztkammer.at/uploads/file/pulidodav.pdfIn PDF document text
- http://ktai.lmg.jp/upload/file/saxopetesiragila.pdfIn PDF document text
- http://mecaniquekd.ca/upload/file/xixidajokewukamonotitupar.pdfIn PDF document text
- http://hebammenglueck.de/ckfinder/userfiles/files/xefaperopilumamasudatige.pdfIn PDF document text
- http://analhospital.net/file/files/giwid.pdfIn PDF document text
- http://www.peretprod.ro/content-images/file/22936409145.pdfIn PDF document text
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16130dce5ee9c3---gujivetodunafobalom.pdfIn PDF document text
- https://zahrek.com/userfiles/file/57728501671.pdfIn PDF document text
- https://incense888.com/uploads/files/202109220330491556.pdfIn PDF document text
- https://macauroommate.com/ckfinder/userfiles/files/mefave.pdfIn PDF document text
- http://miwon.com.vn/app/webroot/uploads/files/zapotomorulakewa.pdfIn PDF document text
- http://lejonhund.com/upload/riribumezevubofa.pdfIn PDF document text
- http://metapolar.hu/tmp/lowidodevewidev.pdfIn PDF document text
- http://olynskiconstruction.com/pics/file/lugusoke.pdfIn PDF document text
- https://botroul.be/uploads/sebekedemorepewerufutu.pdfIn PDF document text
- https://nothingbutsafetyglasses.com/userfiles/file/fezebelovatoxekudi.pdfIn PDF document text
- http://edv-denk.com/userfiles/file/totusononagufedukagot.pdfIn PDF document text
- http://glassick.com/userfiles/file/faxakife.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=simple+voice+changer+apk+downloadPDF 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_off0000ab83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB83 | 14448 bytes |
SHA-256: 247e5fb0bc5b72deada84797e83449a3df7ce557c67dd46ccb4f9b48e35cbc7a |
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font_01_sfnt_off0000cf91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF91 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e7a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7A8 | 11012 bytes |
SHA-256: 63123208b56a79a4a15a13ed88f714484c6d94e0929d12546941b2627d744091 |
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