Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f0e705c67e13a6…

MALICIOUS

PDF

63.9 KB Created: 2021-02-11 17:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e11cb14d8f21866fe8ef9f4c24b7aaff SHA-1: 43cd2fb4fd66bfbef16dfbb4a72dfec9823e7dc9 SHA-256: 38f0e705c67e13a62e05d9421f230eab235857f5b99f2776dcdea384391d0ad6
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://seumenha.ru/wix?keyword=aera+2020+conference+location PDF link annotation
    • http://probmaka.tech/3530164398f8qxn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5fcafd3741ffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_600c04599e08c.pdfIn PDF document text
    • http://makamar.xyz/top_free_world_ps4_gamesdho5s.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/nbme_18_downloadknjif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://repogadobuwiri.epizy.com/lajimevivimam.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/emphatic_pronouns_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/62484563695.pdfIn PDF document text
    • http://xokifenutotumu.epizy.com/88278434116.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/raspbian_jessie_image.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/avast_free_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/lipid_panel_testing_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/jebowa.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/capitalization_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/casey_at_the_bat_questions.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_off0000bf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF8C 4960 bytes
SHA-256: 9a3acf92bb4080eb902127f2a70c245afdb5cc7dfdb8ecb0b0b538fbb9452cf5
font_01_sfnt_off0000d07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07A 10032 bytes
SHA-256: ed7adeb68a27829354d6b0966ec8e05cb28e588159d59012ad88993ae6a8fbfb