MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified 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 embedded URLs and the 'SE_CALLBACK_LURE' heuristic strongly suggest a phishing or scam attempt. No scripts were extracted, limiting the ability to determine specific execution chains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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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 http://hnfhdc.com/UpLoadFile/2021090513522068021.pdf In PDF document text
- https://fgcrubochi.com.ng/ckfinder/userfiles/files/55600476181.pdfIn PDF document text
- http://modern-pro.ru/files/file/lifefenogemepanul.pdfIn PDF document text
- https://stotex.rs/files/98446845986.pdfIn PDF document text
- http://balade-pierry.fr/userfiles/file/21043276483.pdfIn PDF document text
- http://zgkimsteszew.pl/img/upload/files/7113909854.pdfIn PDF document text
- https://anthonygillant.com/userfiles/file/92907242220.pdfIn PDF document text
- http://goldendazzle.com/upload/quangtri/files/87249425365.pdfIn PDF document text
- http://altinay-law.com/images/file/14356859900.pdfIn PDF document text
- http://medianet2000.net/amm_prod/image_news_popup/file/47576310799.pdfIn PDF document text
- https://apskarota.org/userfiles/file/27967689930.pdfIn PDF document text
- https://silverbirdmarketing.com/pages/images/file/musatole.pdfIn PDF document text
- http://tantusmarina.com/UserFiles/file/fanuluvugedipofeloxazuk.pdfIn PDF document text
- https://villadelauca.com/userfiles/file/fojokutozodolulirorinobeg.pdfIn PDF document text
- http://3wsystems.com/shipinc/userfiles/files/40044617861.pdfIn PDF document text
- https://underworldgear.com/admin/images/fckImg/file/91980985051.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1d6dcc265---49814676751.pdfIn PDF document text
- http://www.hgbehringer.de/img/files/files/pijamarifunurikafuvo.pdfIn PDF document text
- https://mimpishio1bet.com/contents/files/mowarulovurelanoxem.pdfIn PDF document text
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/u5klahcptp5qr622k9vskjlqgn/26827263940.pdfIn PDF document text
- http://colleges-in-tamilnadu.com/FCKeditor/userfiles/file/rudibodeziditobekeb.pdfIn PDF document text
- https://lecormier-menuiserie.com/www/upload/files/13787785308.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+use+imessage+on+samsungPDF 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_off0000cfb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFB4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e7cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7CB | 10484 bytes |
SHA-256: 5cfdea213dfc3425121697bc67f95c36896f0d56e881012bb1c366bf4a5738a9 |
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font_02_sfnt_off0000ffa7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFA7 | 17352 bytes |
SHA-256: ade29aa9a7766535a63762626e46b0ed7d3449fa17b14569a27954bb7ddaf8c0 |
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