MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm on disposable hosting, with numerous embedded URLs pointing to further PDF documents. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to obscure the true malicious nature by distributing links across many low-reputation domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
Heuristics 5
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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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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://smidgel.ru/uplcv?utm_term=an+introduction+to+fluid+dynamics+batchelor+pdf PDF link annotation
- http://rungrawin-itt.com/userfiles/files/24132946293.pdfIn PDF document text
- https://sunrise-photon.com/upfiles/editor/files/65307689831.pdfIn PDF document text
- https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/161407f38c911f---pekelex.pdfIn PDF document text
- https://www.notusweb.com.br/ckeditor/ckfinder/userfiles/files/dalagipupukoniwumumude.pdfIn PDF document text
- http://orderleesushi.com/uploads/files/39077805668.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/89272516867.pdfIn PDF document text
- https://sunnyvale.com/wysiwygfiles/file/vufadujolijowal.pdfIn PDF document text
- http://cwpni.com/userData/ebizro_board/file/21488444842.pdfIn PDF document text
- http://blackivy.pl/userfiles/file/mevomaragosofu.pdfIn PDF document text
- https://pfollowers.com/ci/userfiles/files/82370721204.pdfIn PDF document text
- https://novahealthclinic.ca/userfiles/file/34228994087.pdfIn PDF document text
- http://elitsatodorova.com/uploadfiles/file/95646958787.pdfIn PDF document text
- http://abbeloosschinkels.be/userfiles/file/68287245254.pdfIn PDF document text
- http://queensparkview.com/image/upload/File/lisibufisa.pdfIn PDF document text
- http://yuha.be/_files/file/tidavufoxim.pdfIn PDF document text
- http://familiehollander.nl/images/uploadedimages/file/37626184794.pdfIn PDF document text
- http://squash-fitness.cz/userfiles/file/migusobi.pdfIn PDF document text
- https://glamweddingdesign.com/userfiles/file/49868253859.pdfIn PDF document text
- https://creteotels.gr/FCKeditor/userimages/file/monala.pdfIn PDF document text
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/0268a85d554fde0fb77dede331bf0145/26890219316.pdfIn PDF document text
- https://www.igescanada.com/ckfinder/userfiles/files/93645818946.pdfIn PDF document text
- https://bushregenerators.com/userfiles/files/597631372.pdfIn PDF document text
- http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/webijotulebejas.pdfIn PDF document text
- http://mg001.cn/upload_fck/file/2021-9-12/20210912122851815674.pdfIn PDF document text
- http://ccswcd.com/userfiles/file/tutoritusa.pdfIn PDF document text
- http://excitechem.com/userfiles/file/13937502985.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_off0000c56d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC56D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dd7f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD7F | 16980 bytes |
SHA-256: 5ab68339fcea90667c888af3664f066ab534e1cb030fbd7be4858ec479832223 |
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font_02_sfnt_off000109e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109E5 | 11220 bytes |
SHA-256: 3cde808ffec0d8c56db753cc6ce0ca330dab08158a18463b1d0dec5a26bda3b0 |
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