MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which are hosted on disposable domains, indicating a link farm designed to distribute malware. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the PDF_RANDOM_URL_LINK heuristic point towards an attempt to redirect the user to malicious content, likely a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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 http://k3projekt.pl/uploads/userfiles/files/bovozepekunafivikibapi.pdf In PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613a06f254d79---45237041703.pdfIn PDF document text
- https://tigapilar.com/upload/files/9154817184.pdfIn PDF document text
- http://rrmkaryacollege.org/rrmkarya/userfiles/file/39595347803.pdfIn PDF document text
- http://exmar.it/foto_fck/file/99330009005.pdfIn PDF document text
- http://agierresrl.it/userfiles/files/sijefivirefopa.pdfIn PDF document text
- https://sandp-engineering.com/ckfinder/userfiles/files/nadamases.pdfIn PDF document text
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/4538e840c74175e3d1090ab184faecc7/20763020870.pdfIn PDF document text
- http://nsk-nalogov.net/upload/files/badizogajafurazu.pdfIn PDF document text
- http://csc0851.com/userfiles/file/20210906164919_k4tnyr.pdfIn PDF document text
- http://alanaf.ru/userfiles/files/26625876068.pdfIn PDF document text
- http://redondoclassicburger.com/uploads/files/71270492019.pdfIn PDF document text
- http://srividyaastrology.com/userfiles/file/xekararegelepipadisani.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/65936914910.pdfIn PDF document text
- http://4bzsoftware.com/Images_upload/files/44761886740.pdfIn PDF document text
- http://e-motyle.natura2000.pl/imgturysta/files/likotiketosexuxebiwo.pdfIn PDF document text
- http://trustycctv.com/ckfinder/userfiles/files/wofekepokeruwoxujizil.pdfIn PDF document text
- https://chiataiec.com/userfiles/Proj_Name/files/wufixurawawevat.pdfIn PDF document text
- http://aktifimmo.lu/userfiles/files/fumobokunex.pdfIn PDF document text
- http://mensagemcrista.com.br/ckfinder/userfiles/files/86402666331.pdfIn PDF document text
- http://goldendoodlesofthesierranevadas.com/userfiles/file/fopajavuf.pdfIn PDF document text
- http://ivelinabozilova.com/userfiles/file/43862067341.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=sample+desktop+applicationPDF 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_off0000d727.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD727 | 17088 bytes |
SHA-256: 47d555df56c463278e2d1447342009da4056ff2778d25c9a4d9a348361f66560 |
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font_01_sfnt_off00010370.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10370 | 10744 bytes |
SHA-256: bf7b99723a90c3d46ecc45ad561328eb1c3c194f4d038bfc1d16308ef381b1b1 |
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font_02_sfnt_off00011c18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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