MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or trojan distribution. Multiple heuristics indicate the PDF acts as a link farm, pointing to numerous external PDF files hosted on potentially disposable domains. The presence of algorithmically generated URLs and a high number of distinct hosts suggests an attempt to distribute malware or phish for information.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://ketchas.ru/uplcv?utm_term=live+darts+on+tv+free PDF link annotation
- http://njbeihang.com/uploadfile/file///2021091903490584.pdfIn PDF document text
- http://carrozzeriabosini.net/userfiles/files/73055610608.pdfIn PDF document text
- http://dlzhrjd.com/images/uploadfile/files/46136601079.pdfIn PDF document text
- http://thesei.com/In PDF document text
- https://ceral.pl/ceral/pliki/file/kawuvu.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffc52a24b0---22275294521.pdfIn PDF document text
- https://brawlcall.jordanadams.com/ckfinder/userfiles/files/nupekemata.pdfIn PDF document text
- https://jeanmarcrobion.fr/userfiles/file/roviwabotuna.pdfIn PDF document text
- http://brkvinc.com/userfiles/file/76236161212.pdfIn PDF document text
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/378acf6b40c1f1a299a40fa12829849c/24028343335.pdfIn PDF document text
- http://chuabenhxuongkhop24h.com/images/files/27884927373.pdfIn PDF document text
- http://ilovehikari.com/uploads/files/35591390020.pdfIn PDF document text
- http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/fomejojegosut.pdfIn PDF document text
- http://vilniausgreziniai.lt/userfiles/file/zasabivudapijo.pdfIn PDF document text
- http://tysons-cafe.com/uploads/files/jetabigo.pdfIn PDF document text
- http://www.drivingschool-brno.cz/files/files/28446279072.pdfIn PDF document text
- https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/26645237576.pdfIn PDF document text
- http://pngroup.pl/ckfinder/userfiles/files/86954526659.pdfIn PDF document text
- http://jar-ted.pl/file/gowabafopug.pdfIn PDF document text
- http://defhjdr.friend-match.com/upload/files/tegigelofekipuridarenu.pdfIn PDF document text
- https://sarenpinler.com/calisma2/files/uploads/70348072747.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/7950371233.pdfIn PDF document text
- https://mgc.to/sites/web/upload/files/lalakewinovamijijugawik.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_off0000d492.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD492 | 10324 bytes |
SHA-256: f4eb5fe51812321e14d92962b155b9440c95bf8cd77bb6607cccd5c90339a548 |
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font_01_sfnt_off0000ec08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC08 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001041a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1041A | 18708 bytes |
SHA-256: 71b011a0c190c3ea06532713857ae5ced79a91aac0b216c898f368ea024d2d31 |
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