MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs and is flagged as a link farm, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document, likely delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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 https://smidgel.ru/uplcv?utm_term=letters+from+christopher+pdf PDF link annotation
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ac0d1c4f5b5dd9a03a40d0ffe2a9943f/37528196533.pdfIn PDF document text
- http://nhasachthunam.com/upload/files/57745923411.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e67878378---zumidutomamemobar.pdfIn PDF document text
- http://merlegdoktor.hu/tmp/54773115988.pdfIn PDF document text
- http://goteneplast.se/files/images/file/89202926006.pdfIn PDF document text
- http://amuseonline.com/absite/userfiles/file/94087953331.pdfIn PDF document text
- https://africanresearchcenter.com/userfiles/file/sunopuk.pdfIn PDF document text
- http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/vipekorivujodukemef.pdfIn PDF document text
- http://ozkayalartrans.com/userfiles/file/wuzikapa.pdfIn PDF document text
- http://caratow.nl/userfiles/file/22008313257.pdfIn PDF document text
- http://martonaroniskola.net/userfiles/file/bunudufo.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b86bb814208be456cad388383d5d3e5d/41887717614.pdfIn PDF document text
- http://honda-vo.com/upload/file/xiwiris.pdfIn PDF document text
- http://coyada.com/up_images/up_images/disegi.pdfIn PDF document text
- http://fresh-j.info/images/uploadedimages/file/75625992801.pdfIn PDF document text
- http://abpjse.news-read.com/upload/files/96205151738.pdfIn PDF document text
- http://xn----7sbezcba9a5aggb3j.xn--p1ai/ckfinder/userfiles/files/zixilukumezumelivija.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cef1497d86---mepukexamitimekox.pdfIn PDF document text
- http://redigonda.it/userfiles/files/gevoxorir.pdfIn PDF document text
- https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/3r6d1thr6m3j40g1bf4rkbmtun/26429473485.pdfIn PDF document text
- http://kartinatv.org/uploads/files/zovosidimixi.pdfIn PDF document text
- 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_off0000bbe1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBE1 | 10528 bytes |
SHA-256: 5f73b8be02a25efd82de2d9aa31734dac8eccbf0c768232f9c95a3f72ae8b083 |
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font_01_sfnt_off0000d3e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3E0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ebf2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBF2 | 17696 bytes |
SHA-256: f28aabac326e32d4f98c3770e97ae89818f3bc853bd59d00273a4df5c55f7011 |
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