MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link farm with numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware distribution. The presence of multiple external URIs and link farm heuristics points towards T1204.002 (Malicious Link) as a primary technique, with T1566.001 (Spearphishing Attachment) being the likely initial access vector given the file type.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 https://rolcsi-bau.hu/userfiles/files/gozemivimuwokov.pdf In PDF document text
- https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/ecaf7b268c7d5539f80f793792dab38a/rowexeruwivutidaruv.pdfIn PDF document text
- http://bfr-bialapodlaska.pl/userfiles/file/11202009333.pdfIn PDF document text
- http://mgocsm.in/userfiles/file/82815521807.pdfIn PDF document text
- http://boston.pl/fck_pliki/file/soleb.pdfIn PDF document text
- https://tort-art.ru/userfiles/file/14389185144.pdfIn PDF document text
- http://didopack.com/files/rukiligixaku.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4656b0571---55616492323.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137c714e059d---41945020475.pdfIn PDF document text
- http://dnt-mayak.ru/content/File/gozovuvovetojopasifepej.pdfIn PDF document text
- http://zhongyuemedia.com/filespath/files/20210910015340.pdfIn PDF document text
- http://www.brickchamber.com/ckfinder/userfiles/files/jaxupabasunupelad.pdfIn PDF document text
- https://trainova.com/userfiles/file/82386704905.pdfIn PDF document text
- https://rivieresoceanie.com/ckfinder/userfiles/files/90794269660.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613741060ad75---desozuvonirevivore.pdfIn PDF document text
- https://spitalmoldovanoua.ro/ckfinder/userfiles/files/28634003632.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/3272b717222d2423d102f342a352632b/bofugeruriwina.pdfIn PDF document text
- http://imreelectric.sk/uploads/file/22034723939.pdfIn PDF document text
- http://chapelguild.com/images/usr/12008378242.pdfIn PDF document text
- https://heritran.vn/uploads/news_file/bopodol.pdfIn PDF document text
- http://abyss.sk/userfiles/file/rivenakuwujosidog.pdfIn PDF document text
- http://baobianhkhang.com/upload/files/90809130867.pdfIn PDF document text
- http://paolacaone.eu/userfiles/files/wesikozapejirasifaxipal.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=ps3+emulator+apk+download+for+android+2018PDF 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c63e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC63E | 11612 bytes |
SHA-256: cc8d61907e59cda3532d669ad438be0ec9c9d47f1da69dbb765714f4b7c5c397 |
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font_01_sfnt_off0000e201.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE201 | 16976 bytes |
SHA-256: c9f59d6599815a654f2d600f4a6faef9e187c9fede96627d4598dd96624bd004 |
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font_02_sfnt_off00010df6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DF6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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