Malicious PDF — malware analysis report

Static analysis result for SHA-256 6814c2607e4ec53d…

MALICIOUS

PDF

71.0 KB Created: 2021-02-10 08:59:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9cd5966b2099a6b1586880b3667f527b SHA-1: 1532f006e3ed2cebbf6bb3b7091ab4e7f3899361 SHA-256: 6814c2607e4ec53d25cf0a748d8ab21f135fdbbedf63484a44273e72c9009e7c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=quadrivium+pdf+john+martineau PDF link annotation
    • https://cdn.sqhk.co/bifoligi/hgVjjhd/littlest_pet_shop_1033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_6013cbd425ab8.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/aPohfeg/11904887671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_60107d27e723d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392207/normal_5fec6ac765ae1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476135/normal_5fdf9d3195cfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451205/normal_5fe4805974acf.pdfIn PDF document text
    • https://cdn.sqhk.co/befulirawid/a1gg8hb/tamozuf.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/ThgihE3/grand_crime_gangsta_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/sivefuxonix/uzVjghc/wacom_inkspace_app_windows_download.pdfIn PDF document text
    • https://cdn.sqhk.co/libigekukaru/ibFhe42/didusidofikagejatefexu.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/lomogas/esma_mifir_q_a_transaction_reporting.pdfIn PDF document text
    • http://gagimuludodu.epizy.com/describing_personality_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/cockburn_sound_management_council_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/cdac_exam_form_fees.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_off0000d987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD987 5268 bytes
SHA-256: 604278469de9c0434aaf2e2ab362989bf411d269a77b9c4afceb092a8a8ee673
font_01_sfnt_off0000eb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB56 10664 bytes
SHA-256: 4e1bd516320bf1deaa97726bbdff468a722420b0f919ceb544ec07230d59874f