MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains a large number of embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. While no scripts were explicitly extracted, the nature of the embedded URLs and the heuristic firings indicate a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
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 http://comlark.ru/userfiles/files/welovi.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/2b5b6b830c7378e6863411db5e8f3593/xavoralenubopejovum.pdf
- https://asharfilalkulfi.com/ckfinder/userfiles/files/fofalexakasuz.pdf
- https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/3646f16850a03d6257b4debf1c2e65d5/30908709408.pdf
- https://immo-macedo.lu/userfiles/files/wibikarovidukob.pdf
- http://sjhrz.com/images/upload/File/33949568333.pdf
- http://alimentosldm.com/userfiles/file/97159664983.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160df05669025e---96065111060.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/b081c0e5351e1bcec6f48d057820b14d/44230132036.pdf
- http://bizbecho.com/pa/trainstation/uploads/image/file/loxatesixunubar.pdf
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/2f4b813266bfbb637862cd0d23e6bea0/jubalanisoluberebegakepad.pdf
- https://happycolaborativo.com/uploads/files/7693492410.pdf
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/b207e50b0568216468f638b7455cd7d8/26132927825.pdf
- https://visionbrindes.com/admin/fckeditor/userfiles/file/bomabijerinimekusavapuzud.pdf
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab3dc47ee9---nuzulitekotavoselosiwunud.pdf
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f24bebdbba---vizazejujijemirukavujaz.pdf
- http://gewald.ru/content/Files/43406762399.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bdea416e441---bugerinazexewenu.pdf
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084ca237e8e3---juvudidu.pdf
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca2f66352a---rokuwanofopixomube.pdf
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e4da367e01c---68491942831.pdf
- https://foodvellythailand.com/upload/files/300293264.pdf
- http://apluskleaning.com/admin/images/file/dapoja.pdf
- http://mojahotels.com/ckfinder/userfiles/files/79714587938.pdf
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdd2cb9cf3---ruregejeledamuva.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=gcd+of+consecutive+numbers
- 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_off0000c83b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC83B | 16792 bytes |
font_01_sfnt_off0000e04d.bin6e13b2841f5cd5023438753e39376584f27a5920bdf1add4e5e53e5ee29be566 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE04D | 17332 bytes |
font_02_sfnt_off00010df6.bin13bb631f796c4a1f01e0f454dab447a73a772c7c94cbc54bb3941edb28191eb1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DF6 | 10772 bytes |
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