MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a link farm pointing to numerous other PDF files, many hosted on compromised CMS uploads, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection, likely to a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.6307
Heuristics 5
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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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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://leo.tw/upload/ckeditor/files/ludikunodavubifemunuvug.pdf In PDF document text
- http://firsttimehomebuyerstudy.com/images/file/defoxakijasedukipasum.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/7056d93dccdc794840fcc8c35dbe5048/sezagixebuviz.pdfIn PDF document text
- http://www.derbysignandgraphics.com/uploads/file/93185388380.pdfIn PDF document text
- http://asia-test.informacittadino.net/media/files/3684071459.pdfIn PDF document text
- https://skvacations.com/userfiles/file/27362913941.pdfIn PDF document text
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16134f02c953a4---vixibitelobema.pdfIn PDF document text
- http://tehnicgaz.eu/files/file/20173621404.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/fokakorev.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613a3553332a1---zuxuzoluk.pdfIn PDF document text
- http://duquenne-moteurs.fr/webroot/upload/files/wavalurarafa.pdfIn PDF document text
- https://iword.de/userfiles/file/38126047712.pdfIn PDF document text
- https://eventpro-kontraktorpameran.com/uploaded/files/gelozoxi.pdfIn PDF document text
- https://terminarz.online/kosmetyczka/krakow/files/jesabilalamifolukepetaj.pdfIn PDF document text
- http://midesignvn.com/uploads/files/waxoba.pdfIn PDF document text
- https://estatecambodia.com/htdocs/cljr/data/files/nitiralobobunavafejenexos.pdfIn PDF document text
- http://fsgpj.com/upfolder/e/files/20210913074739.pdfIn PDF document text
- http://pure-chiral.com/upload/files/15970980647.pdfIn PDF document text
- http://xn----8sbfeahwarn6ac1adp3fb2p.xn--p1ai/userfiles/file/kutofelolejiwezesi.pdfIn PDF document text
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/06bcdf5548f33b6ab7d4fed04cd7f4cb/biralipamijilasa.pdfIn PDF document text
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca00d3da02---8393736632.pdfIn PDF document text
- http://asclyziarskyklub.sk/userfiles/file/nereroduk.pdfIn PDF document text
- http://roycraft.ca/userfiles/file/74601537604.pdfIn PDF document text
- http://www.cbs-emballages.com/upload/file/73550142599.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=android+restful+web+services+tutorialPDF link annotation
- 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_off0000b6f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6F6 | 20268 bytes |
SHA-256: 8fb2927262f104faed0a070741061eace0c2c4de6e202c7c78df9f7ba8538d74 |
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font_01_sfnt_off0000e995.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE995 | 16060 bytes |
SHA-256: 64af0185a2beffa7382febdf957b2ddd2015d3985e5bc97cf8ad64f3c2914973 |
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font_02_sfnt_off0000feaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEAA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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