MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple heuristics indicating malicious intent, including malformed streams and links to algorithmically-generated URLs hosted on disposable domains. The presence of numerous external links suggests a phishing or malware distribution lure, likely intended to redirect the user to one of the listed URLs. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://inwebjor.ru/uplcv?utm_term=vidmate+apk+for+windows+10 PDF link annotation
- https://rh-h1tapi-turbo.com/contents/files/lavapakasidolejifux.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/e629e1dd0e788f14bc94fc9e6bc50335/zofutalixenuzi.pdfIn PDF document text
- http://lejonhund.com/upload/sufebozofasoj.pdfIn PDF document text
- https://nawaasha.org/userfiles/file/ruzoguwipepesetodugerale.pdfIn PDF document text
- http://markfarolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zunuzenijotumenojinopo.pdfIn PDF document text
- https://paymentor.nl/uploads/file/75522829083.pdfIn PDF document text
- http://studioaba.net/userfiles/files/zudadokebivagajamez.pdfIn PDF document text
- http://lachina.cn/upload/file/xexijulagerij.pdfIn PDF document text
- http://www.companyforte.com/imagenes/editor/file/wevunubedixajerabipobed.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613948cd14f25---tolubafomilikujalor.pdfIn PDF document text
- http://chip-chup.hu/upload/file/84721310896.pdfIn PDF document text
- https://cet.sk/res/file/besirisiwizoxafunokoduli.pdfIn PDF document text
- http://estatepie.com/files/userfiles/file/60971376744.pdfIn PDF document text
- http://nbc.com.vn/ckfinder/userfiles/files/fixali.pdfIn PDF document text
- http://ambulatorioveterinarioscapindandrea.it/userfiles/files/55069457544.pdfIn PDF document text
- http://csc0516.com/userfiles/file/20210903130737_44z3sj.pdfIn PDF document text
- https://ohcsi.com/ckfinder/userfiles/files/75151019949.pdfIn PDF document text
- http://rosesrealtyhomes.com/userfiles/files/75160446286.pdfIn PDF document text
- http://chenruichem.com/upload/files/42306029358.pdfIn PDF document text
- http://varadimasszazs.hu/uploads/files/rumitufotojajo.pdfIn PDF document text
- http://noithatphathuy.com/Images_upload/files/zifekifurepebipo.pdfIn PDF document text
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/vekedel.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_off0000db57.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB57 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f369.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF369 | 17480 bytes |
SHA-256: 0027bd4e1201a8461857b5892e8a7a344beb9745cf7b0c330491504af2811ed1 |
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font_02_sfnt_off000120ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120AD | 10932 bytes |
SHA-256: 5fea3f60b29a4b47cb5f088dd9cf6b040b140361a68ac9d07ac8bd25c9638781 |
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