Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0cbff18e7597d30…

MALICIOUS

PDF

74.2 KB Created: 2021-03-01 20:16:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 627a6eadc9361484850af825ecb4f127 SHA-1: 9f8b52798535acc1ae5b35c1abc737341ea2fd32 SHA-256: a0cbff18e7597d302a790848edf1384c6903880f8879d7ad915442c5385cc4c0
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://midufefew.ru/wb?keyword=samsung%20galaxy%20a10s%20specs%20and%20price%20philippines%202020 PDF link annotation
    • http://lavumosilewu.22web.org/visirebuximewoxodido.pdfIn PDF document text
    • https://cdn.sqhk.co/pagupuxu/c1jiOgh/moporobudutafevamuzi.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvutose/q6gdjbz/29828556436.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/gjdihic/vemizulazi.pdfIn PDF document text
    • http://witejafekomip.22web.org/esl_word_puzzle_worksheets.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/26478765511.pdfIn PDF document text
    • http://fuxakuzaporelu.iblogger.org/lorex_eco_stratus_app_apk.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/how_to_extend_eaton_fuller_shifter.pdfIn PDF document text
    • http://zuraribofib.22web.org/nupuduledidovipaxopaxi.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/nojemi/70552253825.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/the_making_of_a_poem_a_norton_anthology_of_poetic_forms_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/business_entrepreneurship_books.pdfIn PDF document text
    • http://jofiwevamixeta.epizy.com/ucl_dclinpsy_handbook_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/kawasaki_disease_guideline_aha.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/baby_boy_and_girl_pictures.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_off0000e395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE395 6084 bytes
SHA-256: a6c762fccb69c139eb979ebb30608b2d0957ca60e087bcd668e9915f1c6f22e0
font_01_sfnt_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 10420 bytes
SHA-256: ffdb56e0a7843a5b9426484323c6fe81279f5547100609f9bfff0aeea0dee737