PDF malware analysis — malicious · 4e27dc06d5c93873

MALICIOUS

PDF

67.3 KB Created: 2021-02-26 17:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10

MD5: 51ff395c39433372611f6e51af6ca4e7 SHA-1: a4ef648364936daac9a7ce7d405f758a15c04664 SHA-256: 4e27dc06d5c93873cb33e1bbfe23793fc5c01c975d9ca08c08ec9e9d13a1ec96

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://gimoguvi.ru/award?keyword=navneet+organic+chemistry+reactions+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4496151/normal_60175fc5157a0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460954/normal_5fca30469e04e.pdfIn PDF document text
- https://bilobunu.weebly.com/uploads/1/3/5/9/135969114/886197.pdfIn PDF document text
- https://cdn.sqhk.co/runenuti/bJifjeU/voa_farsi_instagram.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4424378/normal_5ff9c8ea8fa6c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zovameden.rf.gd/70490488459.pdfIn PDF document text
- http://litafiwu.epizy.com/66289719834.pdfIn PDF document text
- http://zekarevuwo.epizy.com/gomaz.pdfIn PDF document text
- https://s3.amazonaws.com/fapaga/free_landlord_tenant_contract_template.pdfIn PDF document text
- http://kakikokipuz.rf.gd/wanuvamebitazapawenikewo.pdfIn PDF document text
- http://rukosivujuxu.atwebpages.com/what_is_casual_leave_in_india.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_off0000c95b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC95B	5668 bytes
SHA-256: `209d17e85622a0a0ec348d1f40018ab0a4508230802ade021475ab0ccb65c29b`
`font_01_sfnt_off0000dc96.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC96	10368 bytes
SHA-256: `cd0a5ede3d1a6a83e978e45f693a87c756e996aed023d0ae9d130dbf09ea8ada`

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