MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, and contains multiple heuristic firings indicating it is a link farm on disposable hosting. One high-priority PDF link points to 'http://ambulatorioveterinariovianello.eu/userfiles/files/wofomon.pdf', which is likely a second-stage payload. The presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://abwhopewell.com/uploads/files/47306530643.pdf In PDF document text
- http://kppzp.pl/userfiles/file/8328078116.pdfIn PDF document text
- http://damnoen.com/ckfinder/pho/files/lekegolufuwosa.pdfIn PDF document text
- http://prime-standard.com/piceditor/file/77888194095.pdfIn PDF document text
- http://bjqyms.com/filespath/files/20210903140152.pdfIn PDF document text
- http://www.masozilina.sk/ckfinder/userfiles/files/likugepedugupulol.pdfIn PDF document text
- http://ambulatorioveterinariovianello.eu/userfiles/files/wofomon.pdfIn PDF document text
- https://spandoekland.nl/userfiles/file/pakikimodawuw.pdfIn PDF document text
- http://prodottoitalia.eu/userfiles/files/92281228693.pdfIn PDF document text
- http://rund.cz/UserFiles/File/zokusunabi.pdfIn PDF document text
- https://wangwangcamp.com/uploads/files/202109011937228715.pdfIn PDF document text
- https://infiniteprospects.com/FCKeditor/file/fugizaxomarovibarebowaxu.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/koros.pdfIn PDF document text
- https://lenaoyunlar.net/calisma2/files/uploads/zaxova.pdfIn PDF document text
- https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/lakefererakupekonolileror.pdfIn PDF document text
- http://asirakademi.com/resimler/files/22645981038.pdfIn PDF document text
- https://anitacalderon.com/ckfinder/userfiles/files/86492960280.pdfIn PDF document text
- http://thumpamonpally.com/userfiles/file/levulepulotepalotur.pdfIn PDF document text
- https://nirmalujjwal.com/public/ckfinder/userfiles/files/84881392329.pdfIn PDF document text
- http://ministerium.pt/files/kurivowavux.pdfIn PDF document text
- https://mimpiindahsatu.com/contents/files/nipot.pdfIn PDF document text
- https://tapuionoticias.com/ckfinder/files/35528386314.pdfIn PDF document text
- http://gshosnab.ru/userfiles/file/50328490.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=sonic+3+air+android+downloadPDF 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_off0000b410.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB410 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cc22.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC22 | 16384 bytes |
SHA-256: 4989c801a68993bfe2eb2f796a875e459b98a7379167e82cbf31b15437240d49 |
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font_02_sfnt_off0000f5a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5A5 | 10296 bytes |
SHA-256: 229bfed418e89b769aaf3a3133b45539c8d22889bf69838c37e8629899b849bf |
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