Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6867eb7c59c3d57…

MALICIOUS

PDF

65.9 KB Created: 2021-03-04 01:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e444fcd8329f4851c6018520e17ff07e SHA-1: 698f05bba118dac6000fc1cbd23aa99047229578 SHA-256: c6867eb7c59c3d57bb4d4c8413d8330e93baa305dbedb15a48591436c00e9bb6
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://nipisod.ru/award?keyword=sonic+nutrition+facts+popcorn+chicken PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455194/normal_600c558a57f39.pdfIn PDF document text
    • https://fitulepam.weebly.com/uploads/1/3/0/8/130874207/2648150.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443824/normal_5fdf0ef2743c0.pdfIn PDF document text
    • http://soul-felt.com/define_straw_man_plan2tnaz.pdfIn PDF document text
    • https://buzowoxeferoxo.weebly.com/uploads/1/3/4/6/134662453/15b2a2.pdfIn PDF document text
    • https://wezisaveveto.weebly.com/uploads/1/3/3/9/133999444/3745177.pdfIn PDF document text
    • http://idealicaitaly.site/11744112409zt0s5.pdfIn PDF document text
    • https://vizodifoberesin.weebly.com/uploads/1/3/4/9/134900429/kibipoxi-gikoxavepivedus.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/29447481189vtiwp.pdfIn PDF document text
    • http://shtangye.xyz/blue_clean_383l_parts0dgf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495265/normal_603cf3d97a91e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459785/normal_5ff34f6908cec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416318/normal_600d795e4e350.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451018/normal_5fed91d61fa1e.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/mudurixo/be_safe_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/ambulatory_care_certification_study_guide.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_off0000c62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC62C 5240 bytes
SHA-256: ab0fa616be44031f7af87a4353a8753abf960994db17de8b94e85a5f88e56311
font_01_sfnt_off0000d7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FB 10084 bytes
SHA-256: 21ab2fcef07489881366abdaf006b8ca3a57fe8a82e372db20fb928a8f8ce9c1