MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external PDFs hosted on compromised CMS uploads and disposable domains, suggesting a link farm used for SEO poisoning or to lure users to malicious content. The presence of multiple compromised hosts and link farms points towards a phishing or spam campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://asea-admin.com/_userfiles/file/20210505124502.pdf In PDF document text
- http://ahkjt.com/upfile/file/mudokoxodofaxe.pdfIn PDF document text
- https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/o8m7b91sc16kej2p1fjncmb1mf/nabatijusalorabafiseve.pdfIn PDF document text
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae31f4b712a---19611445885.pdfIn PDF document text
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16080259c06e3e---1347898900.pdfIn PDF document text
- http://clipsttm.com/userfiles/file///selutidirejizipanixovo.pdfIn PDF document text
- http://www.huntsvillepr.com/files/files/71155788500.pdfIn PDF document text
- http://cy2hand.com/userfiles/gataboxu.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a942fb6b42---74204660462.pdfIn PDF document text
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/50b6572f3f2e32ec50382c57ec454377/dozoxekapaxelupegir.pdfIn PDF document text
- https://nhaccugiare24h.com/uploads/userfiles/file/6224562824.pdfIn PDF document text
- http://beliangka.com/contents//files/muteforirobobili.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/i17i50iq1da3imvmj24349sn9i/51797773617.pdfIn PDF document text
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c495161e0f7---satofopowututu.pdfIn PDF document text
- http://verypool.cn/images/upload/File/67142153400.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cafdb8c4c64---28105949967.pdfIn PDF document text
- https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/m5ccuopv8ieda3sjtitl7s7mf2/nulogetenerenaxezunesejin.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ec57cedf6---57920235473.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/78e256c33e0049f5d7f4a6abe7fbf4ad/jimedit.pdfIn PDF document text
- http://diversecityuk.com/userfiles/file/kokusuga.pdfIn PDF document text
- http://epoetryworld.com/clients/53741/File/83158162314.pdfIn PDF document text
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/uus6r8fdl5aopggotm2r2g1mb7/38469488301.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/d8b1f5bbc32dc11c2f2a347eb4b60c30/17777272131.pdfIn PDF document text
- https://advantagelic.com/singhania/downloads/file/ruxetutudisimidivi.pdfIn PDF document text
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/ti2lao6r7j3s5goodsic95t3iv/23006755222.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=writing+with+style+apa+style+made+easy+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://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_off0000f1df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1DF | 11016 bytes |
SHA-256: b8e6b6334ae23779326072f2c04dfbf69c7f427edba10f3de783736f0ca368c3 |
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font_01_sfnt_off00010b14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B14 | 16584 bytes |
SHA-256: 42cb92715c01db834c8ea3fec5482a7c6493ee4324b961a3d502da7adf9e16f6 |
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font_02_sfnt_off00013638.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13638 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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