MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. Heuristics identified it as a link farm with numerous external URIs, many pointing to disposable hosting. The document body is heavily obfuscated, but the presence of external links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://archism.ru/uplcv?utm_term=watch+game+of+thrones+episode+1+free PDF link annotation
- https://mcq.bmtinhoc.vn/InteriorWeb/images/images_news/files/2328729023.pdfIn PDF document text
- https://weilmclainboiler.ca/fck_upload/file/sovoxasotiluvo.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/rl946jvsql693jjnhvf0n743q3/bimularabipuvebufenenux.pdfIn PDF document text
- http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/43253200204.pdfIn PDF document text
- http://ichieh.tw/uploads/files/202109110100472647.pdfIn PDF document text
- https://umutisi.com/umut/upload/files/31385468782.pdfIn PDF document text
- http://studiotrusso.it/userfiles/files/15656967584.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/36023190966.pdfIn PDF document text
- http://ikra-ekb.ru/files/fckeditor/file/60615148215.pdfIn PDF document text
- https://yenicekentkaplicasi.com/userfiles/file/pejebuf.pdfIn PDF document text
- http://lagrupacio.cat/file/puxadovetogodarod.pdfIn PDF document text
- http://catherine-massage.com/ckfinder/userfiles/files/vifinokizaram.pdfIn PDF document text
- https://jakspravnenapsa.cz/userfiles/file/79311678582.pdfIn PDF document text
- http://thuexe7cho.vn/upload/files/vajebasilaxutoxo.pdfIn PDF document text
- http://noahmission.org/dataroom/file/tamibajodi.pdfIn PDF document text
- https://metnar.pl/web/uploads/files/zesufudefazif.pdfIn PDF document text
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613b6ab49c8ed---62602013281.pdfIn PDF document text
- http://runnersavezzano.it/public/userfiles/file/zosoxemobifasudu.pdfIn PDF document text
- http://ohdiabo.net/images/ckeditor/files/pegajuf.pdfIn PDF document text
- https://costabravas.com/uploads/localidades/files/41227392855.pdfIn PDF document text
- http://indcms.testingmachines.com/images/file/74800750418.pdfIn PDF document text
- http://tiszaladany.hu/upload/file/45229246146.pdfIn PDF document text
- https://thebillionbottom.com/business_school/uploads/file/68493256604.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_off0000dbb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBB5 | 17724 bytes |
SHA-256: a197619687ecf2d923fc447d01be87ab8bb82e86c1d34055dad4a60403acc7c0 |
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font_01_sfnt_off000109c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109C4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000121db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121DB | 11064 bytes |
SHA-256: ccac2e2a201e85100043975b3736a932ff93bcf4f4e59d15be59deaa61e85fb4 |
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