MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution campaign. It contains numerous external links, with a high-priority heuristic indicating a PDF link to an algorithmically-generated URL, suggesting it's part of a link farm designed to host malicious content. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
Heuristics 6
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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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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://archism.ru/uplcv?utm_term=river+flows+in+you+sungha+jung PDF link annotation
- http://istihdamhaberleri.com/upload/ckfinder/files/27921140486.pdfIn PDF document text
- http://www.firstpages.eu/app/webroot/files/userfiles/files/welodijojedilixoka.pdfIn PDF document text
- http://spharma.ua/files/file/75975068390.pdfIn PDF document text
- https://icbacademy.com/upload/files/weteduwefiw.pdfIn PDF document text
- http://wsmr.us/userfiles/file/vegid.pdfIn PDF document text
- http://baoveantam.org/upload/files/30085336197.pdfIn PDF document text
- http://luberoff.com/userfiles/file/59661126859.pdfIn PDF document text
- http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/somizitelowonabidima.pdfIn PDF document text
- http://pascalparrot.com/uploads/assets/file/jenudokivixu.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/3d2d488f78ad4be0b5c530839209d6be/81745727345.pdfIn PDF document text
- http://prunay-en-yvelines.fr/ckfinder/userfiles/files/kufanasugaxebefaru.pdfIn PDF document text
- http://kurier48.pl/files/userfiles/file/nogajafazinubufedo.pdfIn PDF document text
- https://gcr.goldcrownresort.com/magazine_files/files/52019877046.pdfIn PDF document text
- http://influences-vegetales.eu/assets/Image/files/26516274269.pdfIn PDF document text
- http://bielle-srl.com/userfiles/files/35844033104.pdfIn PDF document text
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/velaredufotisev.pdfIn PDF document text
- http://www.vandiestbrandstoffen.be/uploads/files/bogolarixagotasi.pdfIn PDF document text
- http://niktid.ru/userfiles/file/pilukasubodibiwagimijino.pdfIn PDF document text
- https://ckmusicdesign.nl/userfiles/file/jabuvimogexagi.pdfIn PDF document text
- http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16146dab812bc9---lupaponamojedokibesexu.pdfIn PDF document text
- http://icoenergia.com/userfiles/files/wekenoxemawi.pdfIn PDF document text
- http://salamino.pl/userfiles/file/kosabaxetanutosefeso.pdfIn PDF document text
- http://xn--80aer5aza.xn---42-5cdakyymnnb9ake1az.xn--p1ai/ckfinder/userfiles/files/girepuzazijixuka.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_off0000ae94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE94 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c6a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6A6 | 14236 bytes |
SHA-256: c4df08da2af0a7b2beed5c81dad3953f862757e660441e5c5c0876f7b575fd96 |
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font_02_sfnt_off0000ea33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA33 | 10936 bytes |
SHA-256: df410465d26f703daf742ce0e923df1b7417d4b72b9a7a36a07955759c48e10e |
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