MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate it functions as a link farm, directing users to multiple external PDF files hosted on various domains. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or malware distribution campaign.
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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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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 http://naturalfurnish.com/userfiles/file/fuwidezazugalive.pdf In PDF document text
- https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/dapijixokofatuxi.pdfIn PDF document text
- https://rlmahtani.com/userfiles/files/wufakipaz.pdfIn PDF document text
- https://rolcsi-bau.hu/userfiles/files/26715043063.pdfIn PDF document text
- http://brcassociati.com/userfiles/files/sekogegisidusubetitakad.pdfIn PDF document text
- http://coverybox.box8websites.com/ckfinder/userfiles/files/80818049242.pdfIn PDF document text
- http://ferramentabelleggia.it/public/file/gajagevorede.pdfIn PDF document text
- http://28777886.com/Lpf/UPFILE/userfiles/files/95131362242.pdfIn PDF document text
- https://dbmotorbrokers.com/userfiles/file/24565092523.pdfIn PDF document text
- https://webkapper.nl/ckfinder/userfiles/files/gunuwexigepoda.pdfIn PDF document text
- http://crabandclaw.com/uploads/files/36120157020.pdfIn PDF document text
- http://royalrep.com/userfiles/files/susojoj.pdfIn PDF document text
- http://learningkey.org/userfiles/duxawezow.pdfIn PDF document text
- http://chroscina.com/userfiles/file/10191542513.pdfIn PDF document text
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/2102873476bfab5b9ba2229627c4eec8/47340339922.pdfIn PDF document text
- https://kligi.viart.lt/ckfinder/userfiles/files/rakijabazefijefizere.pdfIn PDF document text
- http://lokalizacja-gps.pl/userfiles/file/19715774653.pdfIn PDF document text
- http://royalwedding.jp/images/blog/file/27141648890.pdfIn PDF document text
- http://pascalparrot.com/uploads/assets/file/97616708033.pdfIn PDF document text
- http://land89.com/ckupload/files/bekirafegeloki.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-9-18/20210918233419172797.pdfIn PDF document text
- https://clinicaalcantara.es/sites/default/files/userfiles/file/judubidobidupavijowinirim.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=1+pec+bigger+than+the+otherPDF link annotation
- 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_off0000d7a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000efbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFBD | 10532 bytes |
SHA-256: 8f5b8087d8be477aee01f97afa1839807b34314799df0043e18fbfae5bc8bbfc |
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font_02_sfnt_off00010779.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10779 | 18176 bytes |
SHA-256: 49813326b5ad755728955935335f56f8293a32667ef2909a9475714c8a3cc911 |
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