Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc56935dd47ecd6c…

MALICIOUS

PDF

71.6 KB Created: 2021-02-24 05:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea2ec2551ce0b71b756432c78aad75a0 SHA-1: 25c55e54a9862e2aa21c97ad652027ec0a60eb73 SHA-256: dc56935dd47ecd6cae93f96d0b74a9fa8bb610332b8943d6c0b3462517629ce7
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://bologen.ru/wix?keyword=vis+a+vis+season+4+cast PDF link annotation
    • https://cdn.sqhk.co/venifirub/7RifjgI/100_animal_coloring_book_learn_fun_facts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_600c434b5626a.pdfIn PDF document text
    • https://fipuwetula.weebly.com/uploads/1/3/3/9/133997959/1835037.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/3653920.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/iagj3ab/modern_history_book_spectrum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_601aa937bb93a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452846/normal_5fe144750c9fe.pdfIn PDF document text
    • https://jemogofeti.weebly.com/uploads/1/3/4/0/134042608/8803501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446275/normal_6035a938540b3.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/1wOWwgi/55474323545.pdfIn PDF document text
    • https://mijevofere.weebly.com/uploads/1/3/1/6/131606011/zuvaripipexe_badolev.pdfIn PDF document text
    • https://wozijosetat.weebly.com/uploads/1/3/1/4/131407158/kerojifame_xujamexenuxi_jazurikujagumaz_luralubareret.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/gosete/56613815433.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/ct_scan_of_brain_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/uc_browser_apk_free_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/xagovisolepolojogo.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_off0000de93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE93 4776 bytes
SHA-256: 5b13586741c3be83ae3f0f218fbfe567e7a8fdee3e8c6bd256f3d2fd7039917d
font_01_sfnt_off0000eef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF7 10184 bytes
SHA-256: c5fc2532d919e0e8bd7624964bafae4ca39671004dc8a1fdcb2fcace82d65a0b