MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it is a link farm and a callback phishing lure. The document body is heavily obfuscated, but the presence of external URIs and the heuristic findings strongly suggest a phishing attempt. No scripts were extracted, but the PDF structure and embedded URLs point towards a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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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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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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://cructi.ru/uplcv?utm_term=trapezoidal+rule+area PDF link annotation
- http://wxmx.cn/upload/ckimg/files/202109071850278123.pdfIn PDF document text
- http://bakineshr.az/ckfinder/userfiles/files/damopufamibedinu.pdfIn PDF document text
- http://girc.ncue.edu.tw/ckfinder/ckfiles/files/31419037936.pdfIn PDF document text
- http://baovephuongtroi.com/vietkiendo/upload/file/dikijederiwerurenif.pdfIn PDF document text
- http://m3hotels.com/userfiles/file/74092944148.pdfIn PDF document text
- http://formel1vermietung.de/userfiles/file/75980145305.pdfIn PDF document text
- https://laetitiabernard.fr/images/file/3105033964.pdfIn PDF document text
- http://aimic.com/userfiles/file/96249327658.pdfIn PDF document text
- http://matras-devison.ru/upload/file/93680020580.pdfIn PDF document text
- http://reklamaopole.pl/userfiles/file/ninetorig.pdfIn PDF document text
- http://movitecnic.fr/ressource/site-image/files/potikesejugirilidozetala.pdfIn PDF document text
- http://ecohort.com/userfiles/files/47419336505.pdfIn PDF document text
- http://thebankcardservices.com/uploads/files/91377102167.pdfIn PDF document text
- http://www.vandiestbrandstoffen.be/uploads/files/goseneweligodorala.pdfIn PDF document text
- https://b2bpro.xyz/userfiles/file/nezipiturizija.pdfIn PDF document text
- https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/34558471592.pdfIn PDF document text
- http://2990592.ru/ckfinder/userfiles/files/40814577767.pdfIn PDF document text
- https://basisnomor.com/contents/files/pivonutikifawos.pdfIn PDF document text
- https://penzion-pod-rozhlednou.cz/img/file/muputinekexafuximo.pdfIn PDF document text
- http://massarentearchitettura.com/userfiles/files/debisuxubod.pdfIn PDF document text
- https://ashleymongolia.mn/uploads/files/rixeniwumibub.pdfIn PDF document text
- https://ripedzn.com/app/webroot/files/fckeditor/file/kagubosuvelibufalonapur.pdfIn PDF document text
- http://www.mmalappeenranta.com/tiedostot/files/rizopajegulavonelavuna.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/11789383707.pdfIn PDF document text
- http://basketaci.cz/UserFiles/File/lazubawojal.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_off0000afa2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFA2 | 10136 bytes |
SHA-256: 61dcc25c1a2e7324a31a2722a9167c48613d984ddab1e696ce9395d6f74775ae |
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font_01_sfnt_off0000c651.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC651 | 14808 bytes |
SHA-256: 866dcd61ea708779e6ef04a75a7fd1a7fc26753074ea38d15333f23bbaa4b133 |
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font_02_sfnt_off0000ebcd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBCD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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