MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV detection strongly indicate maliciousness. The document uses MFA and urgency lures to trick users into interacting with embedded links. The presence of numerous external URIs, many hosted on disposable domains, suggests a phishing or credential harvesting campaign. While no scripts were explicitly extracted, the PDF format and the nature of the lures are consistent with exploitation or JavaScript-based redirection to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 8
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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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://chcial.ru/uplcv?utm_term=free+minecoins+code+2021 PDF link annotation
- https://baigiangtoanhoc.com/upload/files/36674484252.pdfIn PDF document text
- http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/85186385447.pdfIn PDF document text
- https://www.greenlakecruises.com/ckfinder/userfiles/files/5524690963.pdfIn PDF document text
- https://zniczekowalczyk.com/user_images/file/7448550072.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/62919854255.pdfIn PDF document text
- http://mgrima.com/files/file/47350840697.pdfIn PDF document text
- http://www.pilatesyoga.hr/files/files/zuzegakawiwog.pdfIn PDF document text
- https://austarpharma.com/upload/files/4813390077.pdfIn PDF document text
- http://galettedesrois.eu/userfiles/file/jireladi.pdfIn PDF document text
- http://thietbikhachsanvinhhung1.com/upload/files/1299155761.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16139616ddcc33---kuzizasak.pdfIn PDF document text
- http://kccmaul.com/files/files/47368819071.pdfIn PDF document text
- http://irina-beha.com/ckfinder/userfiles/files/78203986288.pdfIn PDF document text
- http://www.alcera.ca/userfiles/file/2833985178.pdfIn PDF document text
- https://aspit.ro/imagini_ws/8391669886.pdfIn PDF document text
- http://leprofit.ee/cmsfile/contentfiles/72566400627.pdfIn PDF document text
- https://xnkvinatimex.com/uploads/files/rufixawilusefapenurov.pdfIn PDF document text
- http://metisentry.net/ckfinder/userfiles/files/sutajimozenomeguxibofigo.pdfIn PDF document text
- http://www.logomarcanet.com/userfiles/file/42026001905.pdfIn PDF document text
- http://laureysnv.be/uploads/files/553829718.pdfIn PDF document text
- http://julianina.de/upload/file/3585145926.pdfIn PDF document text
- https://sofupingame.net/calisma2/files/uploads/54885348237.pdfIn PDF document text
- http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/22903797973.pdfIn PDF document text
- https://sport-jicin.cz/dokumenty/78665510262.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_off00011389.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11389 | 10496 bytes |
SHA-256: 71c111cc76680fd5356bd8a60829040f63aea3b4a607a528bf65776b04079eac |
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font_01_sfnt_off00012b62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B62 | 20148 bytes |
SHA-256: 62f90926e496e87957fe89d841b75eefda66a969c690e4021bd3a28d8745ee7b |
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font_02_sfnt_off00016072.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16072 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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