MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple distinct hosts and UTM parameters in the URLs points towards a link farm designed for SEO poisoning or phishing lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://chcial.ru/uplcv?utm_term=history+of+electrical+engineering+pdf
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/6548e2c6e96e87ddb7b6fc5d76ac2758/ripisadidojikekekumil.pdf
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8569507ca---xiwuxudogugajet.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b972114300---josezugexej.pdf
- http://balone.net/_upload/file///55948210862.pdf
- https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/f1f915340b5e639ab3ea074034114e84/wikosezej.pdf
- http://emotionpicturesfestival.gr/userfiles/file/53468835139.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac41399b2ac---46880089170.pdf
- https://www.alapan.org/fckimages/file/gorijeleta.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1e8b864db---kutew.pdf
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/809f193596db7dddefb587a4521eb070/perodutulufikej.pdf
- http://aep-tc.com/cache/fck_files/file/69764016049.pdf
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/6b03b2cd3da3f82a4de7d48bc72fac0d/51152848414.pdf
- http://anhuifan.com/upload_fck/file/2021-5-14/20210514130341158597.pdf
- http://usaoxin.com/userfiles/2021-5/file/52544649986.pdf
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b22fa491f6---51075400519.pdf
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/7d16f5b06ffb761b7bf86c443a2b6dcd/86524454258.pdf
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb575426190---ligidafometafozevalepase.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/a1297a2eb4d571a6786dc0b970ff58a8/kowikakutavobawagex.pdf
- http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/d41c82aaea74b24a0b8a8966aebe381f/zugavofitagem.pdf
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e137e8af0---jufikarorug.pdf
- http://twothirdsmajority.us/clients/38522/File/mugupajaxenozufi.pdf
- http://teusz.pl/UserFiles/file/noregirobizujaxuje.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086fab0ec4f3---42521642287.pdf
- http://greenplanetnepal.com/userfiles/file/47660065640.pdf
- https://al-farh-iq.com/upload/userfiles/file/30216508159.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_off0000ec26.bin3999981d34f4f53f5fca2cb01146e7c0981a164b6e5fef34031eb46a2262edd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC26 | 10900 bytes |
font_01_sfnt_off00010551.bin4b8798b6e7361112dda3f528819fe7a9cce35246ba3062b12cc65200742d2248 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10551 | 17100 bytes |
font_02_sfnt_off00013213.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13213 | 16792 bytes |
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