Malicious PDF — malware analysis report

Static analysis result for SHA-256 98dbc63ab22e38ab…

MALICIOUS

PDF

75.5 KB Created: 2021-03-03 01:50:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0cb79c4aa56304f37e2af09b8df263f5 SHA-1: 0b7e9f90ae68b9bb731a40f41f0facf891c54741 SHA-256: 98dbc63ab22e38ab6e725ccce14eb7cef021cad847a82b8061a5fcd7b7ed722e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small 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.
  • 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://maypoin.ru/wix?keyword=fossil+fs4487+user+manual PDF link annotation
    • http://openplafond.xyz/97680282246angyy.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/Nidjb72/xurirod.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/jgghgc7/ruzanaxebil.pdfIn PDF document text
    • https://cdn.sqhk.co/jiloduvunilu/s4gijav/baxegebe.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/d3ec8.pdfIn PDF document text
    • https://dolilufaxeni.weebly.com/uploads/1/3/2/6/132683246/depafagenezu.pdfIn PDF document text
    • https://tasidumil.weebly.com/uploads/1/3/2/6/132680907/fadaruzamopokex.pdfIn PDF document text
    • http://rujawobezixevib.iblogger.org/nodixuxoviboxoz.pdfIn PDF document text
    • http://groby-ritual.online/conversion_cm_to_inches_worksheetsum5hg.pdfIn PDF document text
    • http://creditscorehelp.info/tofadodikaregokawiramaradptd7n.pdfIn PDF document text
    • https://xikunozazoteta.weebly.com/uploads/1/3/1/4/131453294/dujijaxemu.pdfIn PDF document text
    • https://xuzimelo.weebly.com/uploads/1/3/4/1/134132070/5fe42b1256.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/Mnvachj/towejiguxotinivakazaf.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/eijd5ij/50212911516.pdfIn PDF document text
    • http://rovejiko.22web.org/accounting_information_systems_degree_salary.pdfIn PDF document text
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/0f392.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatujij.rf.gd/61247040771.pdfIn PDF document text
    • http://dobiloberororer.rf.gd/apc_be550g_550va_ups.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.

FilenameKindSourceSize
font_00_sfnt_off0000ecd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 5228 bytes
SHA-256: 0c86ce88737aca14ba5b6fc7f63687a90206203b8d4860b74d31536a57a4321b
font_01_sfnt_off0000fe93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE93 10044 bytes
SHA-256: d45daff8378c6fe471e0cab33dd44881571014f93008eb8d5c9524a28161aad4

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