MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains. The heuristic PDF_RANDOM_URL_LINK and PDF_SEO_DISPOSABLE_LINK_FARM indicate a strong likelihood of malicious intent, such as phishing or malware delivery. The ML classifier and ClamAV detection further support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 8
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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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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://garglob.ru/uplcv?utm_term=pg+diploma+in+counselling
- http://millecolori.it/images/file/zawijodagevuzozuzef.pdf
- https://cissud.eu/uploads/ck_editor/files/jejije.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/l41chkntvd6jbn57plpk34n1d5/30081053713.pdf
- http://vodnik48.ru/content/file/2479559543.pdf
- http://architettotoma.it/userfiles/files/zugat.pdf
- https://paron-rebondir.com/uploads/files/81811085761.pdf
- http://www.masozilina.sk/ckfinder/userfiles/files/wokopalifuxiruxujitobiw.pdf
- https://larustt.com/upload/ckfinder/files/fopemoduzipu.pdf
- http://munsusa.org/userfiles/file/20210519154835.pdf
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/hj7bmser859i0dpv4d1u1l3bb1/nabofir.pdf
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/51396869d925e749c702c910f308e690/33441446937.pdf
- https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/b126363a0c4596daffcb592e8cdcffb3/mawejiwosin.pdf
- https://areicon.com/images/file/refesosesubu.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/ca965ec795298c1f17e31fd8da91b2f6/53279381433.pdf
- http://maxtarget.by/ckfinder/userfiles/files/22493038336.pdf
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/v353hqspjv0ouamubvgm2c8ulr/rufaruritunovabirote.pdf
- http://animalscipublisher.com/files/upfiles/file/wokumexuvoralap.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/7jk5456eiejec7shr75l7c9sa7/wabugavuvifikijukexigujuf.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be788d4147e---kuwotojutidegaf.pdf
- http://fogathajtohirek.hu/fckfiles/file/megizozuf.pdf
- https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/28fc75d485e1e10efb54e57e396cd76f/gewaxubavo.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/i0daq6rjhoair2qde6kb4ufl0e/wuzunokasozopogi.pdf
- https://avela.md/userfiles/file/544107703.pdf
- https://empezo.xyz/js/ckfinder/userfiles/files/98241737706.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//83195755939.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_off0000e78e.bina3192f7c035ca4a879f715fe9cc551fc773e4c73d7a717d31e635dc72e65bf6c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE78E | 16768 bytes |
font_01_sfnt_off00011345.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11345 | 16792 bytes |
font_02_sfnt_off00012b5c.bin244a7b89f1eb3e6bb2e02f6b338fa9b8e0e3c1e5e1f0acad02f2cd5e172a6c47 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B5C | 10760 bytes |
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