MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators strongly supports a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://pistant.ru/uplcv?utm_term=sample+email+in+sending+resume PDF link annotation
- http://syuncyoku.jp/upload/file/87301805626.pdfIn PDF document text
- https://glycocalyx.nl/userfiles/image/file/wupupazugalinudosazaz.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144d69c4d18f---juwatatuzogis.pdfIn PDF document text
- http://solyaris.pro/admin/ckfinder/userfiles/files/najifepizagibovusogitepi.pdfIn PDF document text
- http://plise.org/userfiles/file/lenumenejoguliw.pdfIn PDF document text
- http://tw-echen.com/uploads/files/202109091618501128.pdfIn PDF document text
- https://seger.cz/userfiles/file/31792291101.pdfIn PDF document text
- http://hooleihomes.com/cms_images/file/vixoj.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/zezerirejujovasipelewur.pdfIn PDF document text
- http://scro.ru/pic/file/vumixizotekuxogep.pdfIn PDF document text
- http://kodemari.info/data/files/bokurimorurebepob.pdfIn PDF document text
- https://goldmenu.com/userfiles/file/96740378950.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613a04f8d8171---97566463519.pdfIn PDF document text
- https://fortworthdental.net/cmsCart/upload/file/16779454303.pdfIn PDF document text
- http://dfwsedan.com/nbloom/fckuploads/file/kuxamajufulonuzejawanobu.pdfIn PDF document text
- https://weyergans-hcc.lv/userfiles/file/76654243958.pdfIn PDF document text
- http://huyndaicaudien.com/upload/files/6413856319.pdfIn PDF document text
- http://jjc-dev.com/userfiles/file/88317785993.pdfIn PDF document text
- http://hockjoohin.com/admin/uploads/file/xibeluf.pdfIn PDF document text
- http://kieryk.pl/img/userfiles/file/pixafodozufugomu.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/0fdb8b0f2ea767e35838b158ba9a69b4/fumuvabinidoz.pdfIn PDF document text
- http://www.lircai.com/web/inline/file/1383035729.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614131f1b7cf1---84690477621.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_off0000b916.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB916 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d12d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD12D | 10692 bytes |
SHA-256: abc44d32ec150a2636681c695f9ab80c51e94defe2ccb8d4b48605de7b1cd87e |
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font_02_sfnt_off0000e953.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE953 | 14872 bytes |
SHA-256: 443b30cde776059392e64e68828a6e9e445e91a3c89d320875063fd737f8e6d0 |
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