MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, with a high-confidence heuristic identifying a link to an algorithmically-generated URL. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristics suggest this PDF is part of a phishing campaign or a distribution mechanism for further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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 https://krisoc.ru/uplcv?utm_term=velocity+vs+time+graph+examples PDF link annotation
- https://dichvumayphoto.vn/webroot/img/files/nolup.pdfIn PDF document text
- http://baschin-heizung.de/meineBilderAlbertGrundschule/file/83568526952.pdfIn PDF document text
- https://taichielite.com/louis/taichi/ckfinder/userfiles/files/11794914168.pdfIn PDF document text
- http://oshcongregation.com/userfiles/file/daxawivogifaxunarubodebus.pdfIn PDF document text
- http://campbellelectronics.com/uploads/podawarafeliteladaze.pdfIn PDF document text
- https://dangeloremodeling.com/nbloom/fckuploads/file/sagezopebanewe.pdfIn PDF document text
- http://emons-verlag.net/testarea/cwsCMSlight/media/files/86256524424.pdfIn PDF document text
- http://good163.cn/Uploadfiles/files/3744807587.pdfIn PDF document text
- http://www.eau-msu.ru/ckfinder/userfiles/files/88581325292.pdfIn PDF document text
- https://kitapkaplama.com/upload/ckfinder/files/judariwajizi.pdfIn PDF document text
- https://12shio3.com/contents/files/doralofusitedaponivufe.pdfIn PDF document text
- https://pyccenter.com/images/Upload/file/88536144115.pdfIn PDF document text
- http://realestatemiami.com/userfiles/files/surapazedesupepedoka.pdfIn PDF document text
- http://gocchame.vn/app/webroot/img/uploads/files/60440363875.pdfIn PDF document text
- https://pnlcoach.com/misc2/file/In PDF document text
- https://childrencareandliteracysociety.org/userfiles/files/50581546380.pdfIn PDF document text
- https://www.hosotte.com/ckfinder/userfiles/files/xopokukanizub.pdfIn PDF document text
- https://seeyounow.net/userfiles/file/12228122085.pdfIn PDF document text
- https://urbanshapes.in/userfiles/file/rasavopupadepa.pdfIn PDF document text
- http://fanghsin.com/uploads/files/202109141020299970.pdfIn PDF document text
- http://www.egavilanes.com/ckfinder/userfiles/files/jedosem.pdfIn PDF document text
- http://gdlejia.com/uploadfile/files/20210910_085645.pdfIn PDF document text
- http://xageunion.com/userfiles/file/16782282395.pdfIn PDF document text
- http://aotem.com/data/home/qxu1780220113/htdocs/uploadfile/files/75643463063.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_off0000ccef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCEF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e506.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE506 | 10968 bytes |
SHA-256: 629432f7d54c0b3b7dfc67597abc5e5efab1baf2a6e12625fcb533432e6583f8 |
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font_02_sfnt_off0000fe95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE95 | 17432 bytes |
SHA-256: 7137d2be5500d4c75b4ce83275e2e57b9cd531c88bef51b6dc7dbba595fd9f3d |
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