MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by multiple heuristics, including ML and ClamAV, for malicious phishing content. It contains numerous links to external PDF files hosted on various domains, suggesting a link farm or downloader pattern. The 'SE_CALLBACK_LURE' heuristic specifically indicates the document's intent to trick users into calling a phone number, a common tactic in tech-support scams or refund phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://synerhu.ru/uplcv?utm_term=whole+lotta+love+drums+only PDF link annotation
- http://aibasylhet.edu.bd/app/webroot/ckfinder/userfiles/files/72582199956.pdfIn PDF document text
- https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/5d4ded7d5b18e0e3421a1bc4d72b6594/wezipesusaduxo.pdfIn PDF document text
- https://theelementrama9.com/userfiles/files/sanosudin.pdfIn PDF document text
- http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/xubadumevafezixumanar.pdfIn PDF document text
- http://emannsltd.com/userfiles/xitasafinuk.pdfIn PDF document text
- https://mclandpin.com/calisma2/files/uploads/favibogabefol.pdfIn PDF document text
- http://karinameal.ru/imgdish/files/62797169884.pdfIn PDF document text
- https://kaptenhoki.com/contents/files/63377998267.pdfIn PDF document text
- https://2winit.com/Files/files/xodikotufomozijamokakodox.pdfIn PDF document text
- http://www.hermosabeachbungalows.com/userfiles/files/45042277055.pdfIn PDF document text
- https://evpersoneli.net/ev-personeli/file/54367445686.pdfIn PDF document text
- http://scea.edu.mn/ckfinder/userfiles/files/97179235934.pdfIn PDF document text
- http://tylincms.com/userfiles/files/81910320351.pdfIn PDF document text
- https://sayurhijau.com/contents/files/5213945326.pdfIn PDF document text
- https://eniedu.com/data/file/20210901071614.pdfIn PDF document text
- https://eventaipei.com/upload/files/miponexupan.pdfIn PDF document text
- http://0048.pl/48files/file/86843056619.pdfIn PDF document text
- https://egf.tw/test2/images/file/matarikikip.pdfIn PDF document text
- http://guides2alpes.fr/uploads/file/10032022834.pdfIn PDF document text
- http://mmprogetti.it/userfiles/files/20375044952.pdfIn PDF document text
- https://ku4ysk-9lgp4y.com/contents/files/rugijexozazabigilebodiwi.pdfIn PDF document text
- http://355353.ru/userfiles/file/getufonuzemilakisa.pdfIn PDF document text
- http://desiaussies.com/ckeditor/uploads/files/punamuneti.pdfIn PDF document text
- http://hylimusic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/50217998805.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_off0000d627.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD627 | 18476 bytes |
SHA-256: 25f9d0298a88a1544fdf28c83de833c26961465e8fa7958b3597172d4e66d30d |
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font_01_sfnt_off0001064f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1064F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011e66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E66 | 10692 bytes |
SHA-256: 07afbfccee5c4d2603bec81174c794fecbd68696027da53267327ef269d9522e |
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