MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous external URLs were extracted, many pointing to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports the conclusion that this document is a lure for external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://crewmak.ru/uplcv?utm_term=remote+ac+sharp+di+android PDF link annotation
- http://mezon.jp/userfiles/file/jagafolebesewojumatapis.pdfIn PDF document text
- https://billionbosses.com/ckfinder/userfiles/files/497589272.pdfIn PDF document text
- https://jsptti.com/ckeditor/ckfinder/userfiles/files/55373974901.pdfIn PDF document text
- https://alternativecarrepair.nl/userfiles/file/43924151348.pdfIn PDF document text
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/18f511d1a4a1e5bf42153c6261252483/tulajatimelabodipojenobot.pdfIn PDF document text
- http://budoprojekt.eu/obrazy/file/wupafokox.pdfIn PDF document text
- http://cmtoolsrental.com/user_img/files/23263388598.pdfIn PDF document text
- http://pravkniga.ru/files/userfiles/files/58979204111.pdfIn PDF document text
- https://ewt.cz/res/file/26095266856.pdfIn PDF document text
- http://donghotam.com/luutru/files/soxupojozi.pdfIn PDF document text
- http://cdwy028.com/uploadfile/file/20210902015209.pdfIn PDF document text
- http://thaimassageboy.com/ckfinder/userfiles/files/nutuf.pdfIn PDF document text
- https://koratspring.com/upload/file/sadawilukoriregetoxe.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16139e2b4d8e91---1334049140.pdfIn PDF document text
- http://gyogytornasziget.hu/uploads/files/xisapefabezesajegejigo.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/xozudolizexekupumaro.pdfIn PDF document text
- https://landtop.com/filespath/files/20210907154959.pdfIn PDF document text
- https://ultralloy.net/upload/files/36390377980.pdfIn PDF document text
- http://vicc.huh.hu/UserFiles/File/dejuwibujek.pdfIn PDF document text
- https://ikuseikyokai.jp/ckmedia/files/55290062034.pdfIn PDF document text
- http://synhbio.com/upload/files/68476225776.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd981061dd---newemo.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_off0000bdc0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDC0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d5d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5D2 | 16392 bytes |
SHA-256: 6e109a92d0af4f5398165227aa203de99d3dc4e2d8dfa54efe113a943d9565b1 |
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font_02_sfnt_off0001000e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1000E | 10780 bytes |
SHA-256: 90795e4a72cc2eaebd8e7d8f4b5f76d0811b2e690c2c2ce97053ee4d201da73c |
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