MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, but the primary malicious intent is derived from the heuristic firings indicating a PDF link farm and phishing attempts. The presence of external URIs and the ML classifier's high confidence score support this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://baarspo.ru/aws?utm_term=hemoglobin+a1c+blood+sugar+chart PDF link annotation
- https://cdn-cms.f-static.net/uploads/4443337/normal_60277b4f4a042.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386095/normal_6016432eee253.pdfIn PDF document text
- https://cdn.sqhk.co/karelevo/zmjjAjf/befojiwoweruvironoda.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478422/normal_603830c3e3ffe.pdfIn PDF document text
- https://cdn.sqhk.co/xanovixewin/0ijjdij/pukelami.pdfIn PDF document text
- https://cdn.sqhk.co/sewizefaxiki/iekjh3u/notibeludagotakutozil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444636/normal_5fd9cf953195c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406516/normal_601bd00317ac9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417214/normal_5fe08d2d30a26.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421048/normal_602283d7abdfa.pdfIn PDF document text
- https://cdn.sqhk.co/raxuzuvuluf/qm95iiE/lomukumevewokitazet.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409098/normal_602302915dd63.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385004/normal_602c1e038562c.pdfIn PDF document text
- https://cdn.sqhk.co/vifamepupib/cJHjiSm/72885161275.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kewuxejikiwe/silicon_valley_episode_guide_season_6.pdfIn PDF document text
- https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_950a469a9f334c73940ebb5a31b6c5e2.pdf?index=trueIn PDF document text
- https://6776ac3f-883f-499f-bc52-38dff818ec46.filesusr.com/ugd/969751_f82198db71844cd0b6817d30b1c9fd94.pdf?index=trueIn PDF document text
- https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_3ba2cfd2aa3445fb89daf6fd2a84b15d.pdf?index=trueIn PDF document text
- https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_a5d67612a4384a5ca6a22ef0af89aa53.pdf?index=trueIn PDF document text
- https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_1de1c3b5e312453fbc0633782d71ca80.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zakunafu/72806212475.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f744.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF744 | 5504 bytes |
SHA-256: 0670dce7b0af2b5d802d4ae83480888a9b8a12440e04ee292b53159f37efbbb4 |
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font_01_sfnt_off000109cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109CC | 10496 bytes |
SHA-256: da077d77f51658fd6fab7164080bc2c27d419eb2cdde3e5847fca4bb130fd736 |
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