MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1539 Steal or Forge Credentials
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or credential harvesting attempt. The presence of an MFA lure heuristic strongly suggests the document is designed to trick users into entering one-time codes or approving login requests, which is a common tactic for stealing session tokens or credentials. The document body, though heavily corrupted, contains references to 'wkhtmltopdf' and a date, indicating it was likely generated programmatically. Numerous embedded URLs were found, many pointing to potentially compromised or malicious domains, suggesting a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://www.osgeurope.com/sites/osg-corporate.dev/files/webform/19824824677.pdf In PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/99469138220.pdfIn PDF document text
- https://aboss.by/sites/default/files/webform/10891008032.pdfIn PDF document text
- https://www.termis.org/system/files/webform/vomijalikuwukilowerosi.pdfIn PDF document text
- http://www.pbttphtk.gov.my/sites/default/files/webform/33269367294.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/jowodudarazobipadumalo.pdfIn PDF document text
- https://aboss.by/sites/default/files/webform/pibodanagulevegomenet.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/paxifufal.pdfIn PDF document text
- https://www.dgs-interparts.be/sites/default/files/viwiredozilopuvotudulufez.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/22435641867.pdfIn PDF document text
- http://pilgrimland.com/sites/default/files/webform/resume-uploads/tixatikuwasa.pdfIn PDF document text
- http://www.pacificsportfraservalley.com/sites/default/files/webform/joxelivoresilawefuxeli.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=ha+nami+ban+gaye+mp3PDF link annotation
- https://community.princeton.edu/system/files/webform/boranewibutafale.pdfIn PDF document text
- https://community.princeton.edu/system/files/webform/36479690150.pdfIn PDF document text
- https://thesanfordschool.asu.edu/sites/default/files/webform/xumigisapiwonatidokababup.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/delibenapu.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cbbb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBBB | 4796 bytes |
SHA-256: 2cf7ea2d264dd583d76462202431d273a80e9e2f197a5588941cb561b8142812 |
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font_01_sfnt_off0000dbef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBEF | 10700 bytes |
SHA-256: f2653ff6b1dc28dcfb7b01a5caa3a41970cead25b5469b17d8ae2248b7e97996 |
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font_02_sfnt_off00010084.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10084 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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