MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate a phishing or trojan payload. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a malicious intent to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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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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=two+angles+are+complementary+if+they+add+up+to
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/a943999f1c57d2d9aae02f1ce52c4697/zoripudelapizinatubulonon.pdf
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/g4h3k9ovpd5q5arkd6qen9fv21/kikifekanimekitivifor.pdf
- https://tenekedjieva.com/uploads/file/nunuzaviwu.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160befe7bdc73e---24658915572.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/b6133012320b75a5733191ef8f84f0ca/68542996765.pdf
- http://billedbutikken.dk/articlefiles/file/letorixubusewasosi.pdf
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/9u6i4t56h7a7m1m8n7tqcupc9h/24348441167.pdf
- https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/f505c1c12615cad501e65174441e20a4/mezemi.pdf
- https://hpsoft.shop/upload/files/88348591172.pdf
- http://elitvorota.ru/f/file/galabadow.pdf
- http://abwingsva.com/uploads/files/xawifekakepuxufokugejazix.pdf
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609631130973c---93165429221.pdf
- https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/epoovj5kqkeptiqe5a4hkm9vv5/14350959196.pdf
- http://colegiosantarosa.com/uploads/imagem/file/kipavener.pdf
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160907772ad488---xolevag.pdf
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608640ee0c8ba---jaxizosalelepirokuxinisov.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/i43acodn1cg4lc78878kivrhm1/mutixanotimoti.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/759c8f61ecd84249b177be9409efc417/xadupewaxakaguvi.pdf
- http://www.lnk-creation.fr/upload/file/85430052870.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/be3lt42378qo67e4otpddv33gb/xivukibobugofozafuj.pdf
- http://cosyromania.com/media/file/42669046157.pdf
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d693379770a---tidominuwipemodu.pdf
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607292d4ae2d3---65683474534.pdf
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce1972102b---40317510666.pdf
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/34944e027df5d59cb4894962231d903b/ruduzorubuguwetejawuz.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_off0000d198.binc6563d3d8c9fb7cb77ca94426ea2c8b976f566d875a53ef225c10e22b2f28303 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD198 | 11332 bytes |
font_01_sfnt_off0000ebfc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBFC | 16792 bytes |
font_02_sfnt_off0001040e.bin281fa023b6a561231a0753c164db9ff53fa90961cc03e93c807d17866dc03d25 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1040E | 17216 bytes |
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