MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, including those hosted on compromised CMS platforms. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or malware distribution vector, aligning with the Spearphishing Attachment technique.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 http://chinajnbt.com/images/upload/File/32756829951.pdf
- http://luijkzonwering.nl/image/file/latawedirafajeselexas.pdf
- https://karolinanowak.com/userfiles/file/35605158517.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16137186c1aa0d---rejufovim.pdf
- https://inprovitmexico.com/ckfinder/userfiles/files/mewarorolimakekaw.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/161351fea670d6---tatinefejiv.pdf
- https://aayams.com/userfiles/file/tasuwidagejoloxaruvowa.pdf
- http://lrm.mcdonalds.ua/ckfinder/userfiles/files/47385015194.pdf
- http://mecateengenharia.com.br/ckfinder/userfiles/files/veluluf.pdf
- http://sun-dr.com/uploads/files/202109021115566853.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/2ancbt7s03r00dlbsa9ebkh575/renoxuwasufe.pdf
- http://turchifiltri.com/userfiles/files/fotuneluzug.pdf
- http://ofitecnic.es/files.ofitecnic/fck_up/file/bumabuk.pdf
- http://tahi.hu/ckfinder/userfiles/files/96189428467.pdf
- http://pro-group.ru/userfiles/files/20527800041.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16138a53a87d98---ranokisiwavutomuzomuxop.pdf
- https://bandotrading.com/uploads/file/72912051209.pdf
- http://giasuminhtam.com/Images_upload/files/munoriwuxewe.pdf
- https://bodymart.in/ckfinder/userfiles/files/17766191716.pdf
- http://ckud.handysociality.com/upload/files/latif.pdf
- https://bonvoyageindia.in/ckfinder/userfiles/files/doveti.pdf
- http://cdwy028.com/uploadfile/file/20210913144654.pdf
- http://petswithlove.com/cvsprojects/SSK/Source/2.0.0/images/files/88548209339.pdf
- https://vanrun-it.nl/userfiles/files/9492669375.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=watch+the+emperor%27s+new+groove+online+free
- 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_off0000d7c3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7C3 | 16792 bytes |
font_01_sfnt_off0000efda.bin022068b993c81e450e1f1438a7df9a45f47a6b1fcd0824a2054ffbb0d12bd8ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFDA | 11104 bytes |
font_02_sfnt_off000109aa.bine9a2dcb847c0d2bd20c76acb35596e3197598da1800245b3f27235f9f358daa2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109AA | 17952 bytes |
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