MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly supports this, indicating the PDF's purpose is to redirect users through a series of links. The presence of external URIs and the overall structure point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://spitalmoldovanoua.ro/ckfinder/userfiles/files/45485576916.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5tilsld7h0k4plhtlrdh3m1pp6/16178831111.pdf
- https://mangonebike.com/uploads/file/87816944667.pdf
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/fcaaa254f3804c147991145aaf061461/bapum.pdf
- http://autoservizimensi.it/images/fck/file/zedivivixemebakunogo.pdf
- http://feuerwehr-mittenwalde.de/mediathek/files/xeleb.pdf
- http://amoy-art.com/Upload/file/saxujosadisofisugixevokel.pdf
- http://kovove-ploty-brany-zabradli.cz/UserFiles/File/vuwameb.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/774587a3b8bbbeee5a167f371c206526/94062116923.pdf
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a77c01f19---73697097336.pdf
- http://tugrabilgisayar.net/resimler/files/dedifuxanobukuma.pdf
- http://ndt-tl.ru/upload/file/42373465642.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/6f371ef10f2c2109c2390e092e9b936e/danivomenama.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1612388a7954da---bevemebu.pdf
- http://koppeika.ru/userfiles/file/xowumugazenelizotolexoz.pdf
- http://angarakshaksecurity.com/userfiles/file/81880424517.pdf
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a62c994c565---wimowubamubasakepir.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611979bc5649f---gitunozi.pdf
- http://dashoernerboot.de/userfiles/tuvaxezufonamevovajije.pdf
- http://1yunnan.com/ckfinder/userfiles/files/41292652759.pdf
- http://peak-experience-europe.com/images/blog//file/73076897191.pdf
- http://isystem.hu/ckfinder/userfiles/files/xijewotamusifazula.pdf
- http://kite-surf.sk/files/8569723038.pdf
- http://broadmoor80.com/clients/866172/File/bekegosezaxevulotanujojo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=fooled+around+and+fell+in+love+piano+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_off0000ef98.bin8c8a75bbec5f4dfa4ddae24f877008de896e77882ffb45fb3fe004f7223a10bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF98 | 10368 bytes |
font_01_sfnt_off0001070e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1070E | 16792 bytes |
font_02_sfnt_off00011f20.bin21f9948fbefd62e624cc5f430f9f4c8578065708dbbaf050ee93bc49895ea9b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F20 | 17944 bytes |
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