MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms points towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9786
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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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://coretry.ru/uplcv?utm_term=rudin+real+and+complex+analysis+solutions+pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/ftm8bmgb04ig2chi3e3uvuognr/rezokabixawiretip.pdf
- http://esoftland.com/userfiles/file/60742073419.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607691ab8a890---momil.pdf
- https://anmimar.com/royal/userfiles/file/93196537077.pdf
- https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/8h895okcpgmjadngndftdmq22v/17801758478.pdf
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/3b4792b3dba2c0f479ab967256a3e8d6/85304059266.pdf
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/3c49d1e08ad4e8018d9f89610496052b/14185161500.pdf
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/8060a022687c2ad3791ceb5e8da6fa12/kexul.pdf
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f24985b9d7---neporotowifavafijej.pdf
- https://houstoncoinshow.org/FCKeditor/file/88984532579.pdf
- http://fullx.net/files/feluzok.pdf
- http://nuestratierrapremios.com/campannas/file/98873526012.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab032b90439---92281188984.pdf
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/8335ec9ea7eb5c7f0286f9d0f9a1eeb1/1291992422.pdf
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/l7fide3mbpk68smdf1icstgo8r/14713812978.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16088f76e71083---83279637646.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16093b9e735ddc---duxewaniwolilisavuruso.pdf
- http://richardarnoldalumni.com/clients/a/ad/ad1dcfa6f69ac51e3fe6bec18f6cf6d6/File/93917248915.pdf
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16080107e5d021---mexalonazevorusavu.pdf
- https://a2designbg.com/userfiles/file/40378973972.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c503bc62196---38358541311.pdf
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/cjrjdcvbl6s18pjomf8ifg6u1b/samen.pdf
- http://swiss-ex.com/78839455696.pdf
- http://centralgiving.com/media/userfiles/file/35591110247.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/slfoh86dnqvec5gjmjb9ga59ej/83836014108.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d122dc834c---dajugezamunebev.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f267.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF267 | 16792 bytes |
font_01_sfnt_off00010a7e.bin185ab913181ac93ac5a5dd79d94b0b75837049a4f9247e13e6e4c8b104ec980d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A7E | 11144 bytes |
font_02_sfnt_off00012481.bin891d851c2da41664c77e7b2a2ab4d2c63a4d47f0063f7300452b6838ae60b06c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12481 | 19152 bytes |
font_03_sfnt_off00015683.bin5f62e9a2f8fcb67f5c62b0dc9a81ba11010d36190ce08b326eea0c5fcd8206be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15683 | 16340 bytes |
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