MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and ML classifier indicated maliciousness. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.7190
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://inwebjor.ru/uplcv?utm_term=use+propensity+in+a+sentence PDF link annotation
- http://aurangabadptti.com/ckeditor/ckfinder/userfiles/files/tujuwiwowufixafizud.pdfIn PDF document text
- https://bulgariapools.com/contents/files/91444202126.pdfIn PDF document text
- http://labradory.pl/file/32045056401.pdfIn PDF document text
- http://jcon-aps.dk/userfiles/file/didulad.pdfIn PDF document text
- https://buildingexpertsdirectory.com/ckfinder/userfiles/files/64257437904.pdfIn PDF document text
- https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/cf7a6025df3126e125878c15ebdd1faa/86934246680.pdfIn PDF document text
- http://viettelhaiphong.me/data/dulieu/files/10769236269.pdfIn PDF document text
- https://mlbcsimleague.com/ckfinder/userfiles/files/simusikukebufavedulagino.pdfIn PDF document text
- http://cafegreenwichvillage.com/uploads/files/21753221044.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613a8116d9fac---mamenemurofulis.pdfIn PDF document text
- https://thebillionbottom.com/business_school/uploads/file/fibewugukiv.pdfIn PDF document text
- http://liily.jp/upload/file/20210919155914.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/2021929844292881.pdfIn PDF document text
- http://czerwoneiczarne.pl/files/file/82111958292.pdfIn PDF document text
- https://taiwan-tiaya.com/upload/tiaya_official/files/wesulapobujumisu.pdfIn PDF document text
- https://broadcasthub.com/ci/userfiles/files/31003068135.pdfIn PDF document text
- http://technology-mp.it/userfiles/files/wexij.pdfIn PDF document text
- http://presupuestos.pavysan-bigmat.es/ckfinder/userfiles/files/jerulodon.pdfIn PDF document text
- http://esipro.fr/userfiles/file/tosepemojiv.pdfIn PDF document text
- http://mascotdd.com/file_media/file_image/file/29136615582.pdfIn PDF document text
- http://kammerchor-lindau.com/file/betelukubolaxed.pdfIn PDF document text
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/3fccca2e45b440789ea05c49f54f765b/duvedugonu.pdfIn PDF document text
- http://baoveantam.org/upload/files/69947515453.pdfIn PDF document text
- http://pascalparrot.com/uploads/assets/file/mopuvedufobopufatekadok.pdfIn PDF document text
- https://nhatngudongkinh.com/upload/ckupload/files/62934056076.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b0cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0CC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c8de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8DE | 16808 bytes |
SHA-256: 829bd18a7cd0d0dab006b951dd0deb8b4b2688c15f1e40478e9c4a82863ec43b |
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font_02_sfnt_off0000f331.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF331 | 10444 bytes |
SHA-256: e9ce80b81805a1243635cad86ebce30273f70af1c0264a6f706694005e813af7 |
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font_03_sfnt_off00010b0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B0C | 16448 bytes |
SHA-256: 0e4cde3d5bdd5452960de995a4807c8da4ec665155a9812e2f8e54e6c49b7878 |
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