MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier. It contains multiple links to external PDFs hosted on various domains, with a high-confidence heuristic indicating a link farm on disposable hosting. One specific link points to 'https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/50267193501.pdf', which is likely the malicious payload. The document body is heavily obfuscated and unreadable, but the presence of numerous external links suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 7
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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 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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://legend-chang.com/UserFiles/files/kakeperawunapesubuzuwej.pdf In PDF document text
- http://byty-pardubice.eu/UserFiles/File/8846196603.pdfIn PDF document text
- http://primaneighbors.com/userimages/51551891803.pdfIn PDF document text
- http://ncfc.com.tr/ckfinder/userfiles/files/wedasokifasaw.pdfIn PDF document text
- http://kemnhapkhau.com/upload/files/vegikorivun.pdfIn PDF document text
- https://wickedcheesy.com/images/file/38004458936.pdfIn PDF document text
- http://ngoinvest.com/uploads/ckfinder/files/beniwixuxizugerokalogoge.pdfIn PDF document text
- https://propiedades.net/ckfinder/userfiles/files/59383339782.pdfIn PDF document text
- http://medizator.ru/ckfinder/userfiles/files/12806721321.pdfIn PDF document text
- http://e2ingenieros.com/ckfinder/userfiles/files/31985193240.pdfIn PDF document text
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613020e23f5e2---sisepematonolubozix.pdfIn PDF document text
- http://x-mobio.com/upload/files/32214515690.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/37461601098.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/794ace33d93818eb53eda3991661c506/goxipupupupafenudefokofax.pdfIn PDF document text
- https://heart-calligraphy.com/uploads/files/202109120036313466.pdfIn PDF document text
- https://kaptenhoki.com/contents/files/43731548434.pdfIn PDF document text
- https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/50267193501.pdfIn PDF document text
- https://www.playitdirect.ca/ckfinder/uploadfiles/files/sufigotisasaz.pdfIn PDF document text
- https://ukmalayalamnews.com/userfiles/file/negukazugulapukixamo.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/72726299703.pdfIn PDF document text
- http://zentrumok.com/userfile/files/36380740112.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=iphone+x+boot+modePDF 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_off0000cd74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD74 | 10280 bytes |
SHA-256: a227e4568206e0514d92b882d6cb12c44f429b7ef10b89d124728d02e8e44462 |
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font_01_sfnt_off0000e420.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE420 | 16948 bytes |
SHA-256: 466c424a793bcff4580b9fb35530795deaaf792177f8b46e4f0ea98a665dbb94 |
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font_02_sfnt_off00010fa0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FA0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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