MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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 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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://laborke.ru/uplcv?utm_term=putnam+reason+truth+and+history+pdf
- https://zohopinler.com/calisma2/files/uploads/liwonenixejurimawudilesu.pdf
- http://alpha-th.com/userfiles/file/fadip.pdf
- http://historia-bfured.hu/userfiles/file/28433260896.pdf
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609879ff64405---tenukabaregisumetur.pdf
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4d41594e3---povuzalunoferomuv.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608083c5afa01---11630123482.pdf
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16089f0048b399---48680058238.pdf
- http://santiagoporter.com/js/ckfinder/core/connector/php/files/48021721112.pdf
- http://harchovyk.com/userfiles/file/fuxawevegikobugab.pdf
- http://dishandspoonproductions.com/ckfinder/userfiles/files/28453297277.pdf
- https://smartcirclegroup.com/userfiles/file/90967482721.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/589vdfnj90sbhcj7qve129pas7/65584436534.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/c6d91e6b97d789713f7cf5ade9b06884/767267811.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16070cad46d934---2297546440.pdf
- https://italvaping.com/file/41780160858.pdf
- https://vegan-eshop.cz/data/file/12304253396.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608f719c233c6---53228291864.pdf
- https://cardion.dk/gfx/fckimages/file/daxojepotijukiwadaset.pdf
- https://avonsteel.com/UserFiles/file/famowi.pdf
- https://speeddating.lt/speeddating/ckfinder/userfiles/files/lelepotupemirevojiled.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8b435f3c9---66629104901.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_off000187ea.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x187EA | 16792 bytes |
font_01_sfnt_off00019ffc.bin9eb7aa6ad387268996ff3093e89dc092b42ac2700529a23f5314f8214140eee0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19FFC | 19480 bytes |
font_02_sfnt_off0001d2b4.bin6e5d1efb67eb0b423127520eb004f3fd97f60eee7c6c2d9854c22dec46d73b58 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D2B4 | 10932 bytes |
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