MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The presence of a 'download' button lure further supports the malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://huntic.ru/uplcv?utm_term=autocad+tutorial+pdf+free+download+2018 PDF link annotation
- https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/33c7adc5f88ce73d5537530b5fc741c6/13803167598.pdfIn PDF document text
- http://studiocastigli.eu/userfiles/files/manun.pdfIn PDF document text
- http://jshtextile.com/UserFiles/file///nudapazi.pdfIn PDF document text
- https://dancleland.com/img/upload/file/vebej.pdfIn PDF document text
- http://carbonelite.ru/file/potafazig.pdfIn PDF document text
- http://epodhajska.eu/UserFiles/File/54112873158.pdfIn PDF document text
- http://fotocaroli.it/userfiles/files/47829806647.pdfIn PDF document text
- https://tenshinorchids.com/FCKeditor_upload/file/gevaxutagik.pdfIn PDF document text
- https://mmszke.hu/files/file/16246818647.pdfIn PDF document text
- http://anabakorea.jp/userfiles/file/88958167740.pdfIn PDF document text
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5f2d3c4966---lonoluzejunub.pdfIn PDF document text
- http://z-i-f.ru/userfiles/file/nujubideneseziliwured.pdfIn PDF document text
- http://alpanelektrik.com/depo/sayfaresim/file/nowasuw.pdfIn PDF document text
- http://svsteinfurth.de/radsportfiles/file/suxobumitemuripaz.pdfIn PDF document text
- http://oikoscoccatoarchitettura.com/userfiles/files/fomubinoxuxejetutob.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c7933a56c---33584026148.pdfIn PDF document text
- http://precedent.by/_newsite/images_from_html_editor/file/lefalud.pdfIn PDF document text
- http://www.premiumimport.nl/ckfinder/userfiles/files/rezozewanur.pdfIn PDF document text
- https://beldapin.com/calisma2/files/uploads/17253500595.pdfIn PDF document text
- http://whsclass1968.com/clients/f/f8/f849445bb2fb8f42e7c863050dc1ba38/File/49538140139.pdfIn PDF document text
- https://cfbadalona.net/ckdata/files/49838606686.pdfIn PDF document text
- http://dichvuhieuchuan.com/upload/files/82771395870.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_off0000d28d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD28D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eaa4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAA4 | 11112 bytes |
SHA-256: eda7c4b6ecc52d18c64449a2e0257430938cce579648f30b1822e5f7715c7945 |
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font_02_sfnt_off000104d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104D0 | 17428 bytes |
SHA-256: 8b37a1357124aa30607f3c74cb7d890dc90be64c24737659b0b5179991b8e563 |
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