MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing lure. The presence of 'wkhtmltopdf' in the metadata and the nature of the URLs indicate a likely attempt to redirect users to malicious content, potentially for credential harvesting or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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=convert+jar+to+apk+online PDF link annotation
- https://ctcitsupport.com/media/files/zajefag.pdfIn PDF document text
- https://unitjaya.com/contents/files/gebugi.pdfIn PDF document text
- http://akademibt.com/resimler/files/30358777477.pdfIn PDF document text
- http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/51036451748.pdfIn PDF document text
- https://szabobuszrendeles.hu/files/files/bewinifimafoxalizipek.pdfIn PDF document text
- https://computerzone.pk/file/vijanafalezuxupujifokub.pdfIn PDF document text
- http://avandcie-automation.com/ckfinder/userfiles/files/68511093048.pdfIn PDF document text
- http://nhatngungoisaoxanh.com/upload/files/monorerigokolokulup.pdfIn PDF document text
- http://xn--vb0b83rba554gca.kr/page_data/file/20210908172754.pdfIn PDF document text
- http://whuntex.info/userfiles/file/30713179226.pdfIn PDF document text
- http://poiskvod.ru/images/file/65376263879.pdfIn PDF document text
- https://facades-et-traditions.com/actualites/file/16736458123.pdfIn PDF document text
- https://vasantviharproperties.com/userfiles/file/46425705744.pdfIn PDF document text
- https://hotelangela.hu/userfiles/file/lixafasepesafos.pdfIn PDF document text
- http://fandimnarodaku.cz/upload/file/6078696227.pdfIn PDF document text
- http://babywagen24.de/userfiles/file/kirifep.pdfIn PDF document text
- https://kop-trans.pl/uploads/userfiles/files/5314562806.pdfIn PDF document text
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613a945e20e58---95525633807.pdfIn PDF document text
- http://charmingcurls.se/upload/file/84265480746.pdfIn PDF document text
- http://webminmax.com/userfiles/file/sirinawulewekebeziwule.pdfIn PDF document text
- http://strap.sk/uploads/files/79331695196.pdfIn macro / runtime command snippet
- http://hoigolfbinhthuan.com/users/files/76383682492.pdfIn PDF document text
- http://cityclick.it/userfiles/files/lesasejufawukopinevel.pdfIn PDF document text
- http://webminmax.com/usIn macro / runtime command snippet
- 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_off0000d654.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD654 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ee6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE6B | 10396 bytes |
SHA-256: d856a876e0b48af2180fd839426a810c557e343fd4b0238163650cb95e597d75 |
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font_02_sfnt_off0001060b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1060B | 16812 bytes |
SHA-256: 7170b17f32e79a00746eb4f95dac7442194d3c6f200b008ebaf14f73f46b7c8a |
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