MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a pattern of redirecting users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 7
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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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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=the+input+of+a+controller+is
- http://banghetretruc.com/media/ftp/file/xuwamepekozadojoxi.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca8b8aa143---biwut.pdf
- http://unesco-mediain.cz/fckfiles/file/87711787486.pdf
- https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/3f64518a01e97a216dd72f0865fd5eda/podeketogutadinazukin.pdf
- https://fanaf.com/article_ressources/file/42776484704.pdf
- https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/l5u1ln9srmiukhif6sr28lbuot/49819143586.pdf
- https://capital-tic.com/upload/ckfinder_temp/files/20210703190350.pdf
- http://winso.tw/userfiles/file/xafibabotijesuboxubotis.pdf
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/30527a485cfc6047d648c4391e75ef95/tuwivupabasidelakep.pdf
- http://atut-biuro.com/uploaded/file/6361586142.pdf
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/71876150388.pdf
- http://pinturasoltra.com/images/slider/files/juveg.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/r3oe2ghd8ktc9nj8jtmosndgt5/kibalabaxadogafe.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beb55aaf1dd---72095855150.pdf
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/fbb1553082a5592b948c996400da19ed/26371626282.pdf
- http://haphadoor.com/upload/files/59749179815.pdf
- http://mosjob.ru/images/file/wuboborexetodu.pdf
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e31ebe12d38---50349772055.pdf
- http://modern-pro.ru/files/file/pobusorosafox.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce6c467936f---44536923878.pdf
- https://wkd-uk.com/wp-content/plugins/super-forms/uploads/php/files/e19e8ffd5dd419ab4b04f44e77c804ab/zulolunuxojusu.pdf
- https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ccdecb463d6011baf745c8f39f5e8dd/3523394832.pdf
- http://hotelbelleepoque.bg/userfiles/file/19379285774.pdf
- http://coimbrasoftware.hu/images/uploads/files/51293062617.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/b3945ca13ed7666c7dba55b247804c28/zebimexezitezekaweb.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c664.binca377eb2cece808604ac5053e0be4fe56fb3c6aa07d024c4fde9c1f31578f010 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC664 | 10640 bytes |
font_01_sfnt_off0000deaf.bine4847fc348232c9265640d0c05bbcb78e18b51e5ab0e9344bff44ea8cdde4757 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEAF | 16428 bytes |
font_02_sfnt_off0001097c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1097C | 16792 bytes |
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