Malicious PDF — malware analysis report

Static analysis result for SHA-256 e611d0ba00271521…

MALICIOUS

PDF

70.1 KB Created: 2021-03-01 09:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 81572ea69f1eadea5a3a5db20964a2e0 SHA-1: 4976f716cc268a8ab9fedea2d19c25c5b716f65e SHA-256: e611d0ba0027152170d0ad0581883c4d059b843ee54abf54e5599520235a5d9a
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=quran+arabic+urdu+translation+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467577/normal_600ab43c74d10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366406/normal_5fca7b88cdb5d.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jSwjijd/mulorerogip.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/how_to_set_up_a_moultrie_mobile_camera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_602e22b42d662.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/z3XIgha/onedrive_signing_in_stuck_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/jgggiaK/progressive_neurology_hackensack_nj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457592/normal_5ff24a169a4e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_601f80f8a5ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501775/normal_601ad8d296743.pdfIn PDF document text
    • https://xazovobarobek.weebly.com/uploads/1/3/4/4/134403102/7354650.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/igigngj/73337488291.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447626/normal_5ff66bfa76d62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380070/normal_5fde20e51bcb3.pdfIn PDF document text
    • http://vukuradi.mygamesonline.org/42786383846.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwatimab.atwebpages.com/tufinepuvuxarimelaso.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC03E 5444 bytes
SHA-256: 242f40b6af899567be6819f2fed85dcae45db2ace42fd6d206dcc968306f151a
font_01_sfnt_off0000d2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D1 9844 bytes
SHA-256: e6131b5609c3dc132966524f208fc7c97e246d2b7389718b6aef419a78019315
font_02_sfnt_off0000f4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D3 16448 bytes
SHA-256: 3f7f6beb0f5865f83039c8434023d34048916fbab515aea8bfee4d6c7e3f3101

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