Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba35f0a04d1be81…

MALICIOUS

PDF

76.1 KB Created: 2021-02-27 09:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3e4cab7f43b49e20fd7f1ffddf832f43 SHA-1: cf5633b58d555e6841c170986a14388fe143f461 SHA-256: 5ba35f0a04d1be81fa434aeece493f84ceebe3baad278002568b37cd0a9ba5b1
136 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
  • 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://xezojetit.ru/wix?keyword=lucky+patcher+apk+download+8.2.1 PDF link annotation
    • http://nabavawuzafurur.mygamesonline.org/how_to_clean_shark_vacuum_filter_lift_away.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371498/normal_5ff493435af8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402280/normal_5ffc2de1f2eaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409992/normal_6020a93696cc0.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/tactics_by_gregory_koukl_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_6036a995625e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379471/normal_60173821efaec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407789/normal_5ff7dcbb70ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450240/normal_5fe75c5885991.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/jebokizez/wewexakapes.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/pharma_maintenance_engineer_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/30440632612.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/16020451674.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/89852810876.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/como_nao_descascar_do_sol.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/lomizuluruwabaxinis.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/el_cero_absoluto_cecilia_von.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/35925546552.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_off0000ecd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD1 5592 bytes
SHA-256: 0ba4f2e8392d4e5dea9264d00823289a6d1ffa4ab3ac0eef57ccc7aad1ecbc1a
font_01_sfnt_off00010002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10002 10476 bytes
SHA-256: 5f517f0e6d04ea8d68df87476f2cee72bbb8397a242d6fd5f97e306c858dcc3b