MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute malicious content or phish for credentials. No scripts were extracted, but the structure and URL patterns indicate a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160acaf45a6bf3---3113057277.pdf In PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792586eaba5---21296916750.pdfIn PDF document text
- http://ahrestygz.com/userfiles/files/20210609_181130.pdfIn PDF document text
- http://exclusivelimoservice.com/ckfinder/userfiles/files/wepogabofopavudutexitufu.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2b9e8adc9---raribavulurugaxa.pdfIn PDF document text
- http://asbufestival.com/uploads/FCK_files/file/vivadabuvekag.pdfIn PDF document text
- https://iwistw.com/upload/files/19178751855.pdfIn PDF document text
- https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/c9377f91935c55b374ca5c06fdf439a6/lurotuz.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf88fd61421---58113050101.pdfIn PDF document text
- https://classykitchen.pl/web/uploads/files/sekipukiteno.pdfIn PDF document text
- http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/64179867964.pdfIn PDF document text
- http://oldtimerclub-thueringerberg.at/images/file/65986054340.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b9f603b87cf98b92d267d50758cc238a/zotozawilitanaxofogupori.pdfIn PDF document text
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1812c6619---wibinize.pdfIn PDF document text
- https://dienlanhhonganh.com/images/pic/file/segezakoduburuko.pdfIn PDF document text
- https://anmimar.com/royal/userfiles/file/42482553364.pdfIn PDF document text
- http://mariopresto.pl/userfiles/file/bitaxabopiwifit.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=ganjul+arsh+transliteration+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001053e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1053E | 5236 bytes |
SHA-256: 0c4fb963584435822c972df3f54f72799918116c23984bd7996f4028c389343d |
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font_01_sfnt_off0001170f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1170F | 10544 bytes |
SHA-256: feadc913640a6030c3e0a103bae39243dcdcf09b1ed0b186b781fa9ae2ec68c8 |
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