Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6efd2aefc66a06d…

MALICIOUS

PDF

72.2 KB Created: 2021-02-20 11:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e70b13c810d2745177bf4324b38007d SHA-1: 3a768bd1e7a50f13be919bfae3f5bd397f492c81 SHA-256: a6efd2aefc66a06d413ca81353c963f9bd75901be33c727ee9299fde249677d3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=angry+birds+2+apk+mod+latest+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402246/normal_5ffdb8122ba0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443799/normal_5ff454b22f3fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_6009f227decbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449793/normal_5fd61f1a94757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380068/normal_5fcf23d9f0f81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468819/normal_600b3aff8a90e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463824/normal_5fee1df2cac7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367937/normal_600458d80c80c.pdfIn PDF document text
    • http://andyhong.blog/semedolifuromamelai7dms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lipewolitaden.epizy.com/pizajefiwejurapidakubinu.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/common_interview_questions_answers.pdfIn PDF document text
    • http://tepokubomime.rf.gd/mit_app_inventor_2_for_pc.pdfIn PDF document text
    • http://tuneluxowimosa.epizy.com/93678981939.pdfIn PDF document text
    • http://lunupoxupa.rf.gd/51663101800.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_off0000dce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE4 5764 bytes
SHA-256: 0e2740ee44938e2376c2a2d9de9f4e99635b5ffc43a80c0ca573b2712fdb247f
font_01_sfnt_off0000f081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 10368 bytes
SHA-256: 6a0c7758f4dc381d037214ce1229e2ccd14c153bd1a7e7872701f5f7e6e495b3