Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3e2c7b3521efcb…

MALICIOUS

PDF

69.3 KB Created: 2021-02-07 02:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b5ff4bc1917adeca971d9ae6f9cbb789 SHA-1: 635dacab16b06d2bcb4a0670a6c4c6331fd54c4a SHA-256: 4a3e2c7b3521efcb194a2290dcc2e69f7e62369b8c6ff063232c8385e1793f6d
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://druttle.ru/wb?keyword=la%20cimbali%20s30%20manual PDF link annotation
    • https://cdn.sqhk.co/teposodigar/ejeWgc8/35372310401.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365621/normal_5fe487acbc740.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473388/normal_6009a2a2cc8e7.pdfIn PDF document text
    • http://goproonly.com/mawunuxifotusunowemumu5el35.pdfIn PDF document text
    • https://gavozosalaz.weebly.com/uploads/1/3/1/1/131163920/8359811.pdfIn PDF document text
    • http://lisolu.org/organizational_communication_zarembaxridc.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/h8sihic/37601810558.pdfIn PDF document text
    • http://ctyr.ru/borderlands_the_pre_sequel_dlc_trophy_guideaxum3.pdfIn PDF document text
    • http://becloud.website/yakuza_3_ps4_hostess_guides3o4h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481052/normal_5fec14230b7df.pdfIn PDF document text
    • https://cdn.sqhk.co/refevebux/hiHijIS/14739075214.pdfIn PDF document text
    • http://yoga-italy.space/formato_certificado_medico_dif2sjlf.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/4rifhf7/balufedipotugason.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454809/normal_5fca5a41e43b0.pdfIn PDF document text
    • http://santand-es.com/933311483485mg6g.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/fukezavazuj/19961055986.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/90096844789.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/93919793124.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_off0000d2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CD 5236 bytes
SHA-256: 055e16587c5870f57018f61b6e361cc25e90a8d033d40ac14e9f45ff7110733a
font_01_sfnt_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 10536 bytes
SHA-256: 887ff1a83f8e062aca7637c440b9486a1dc7ca22b91f2113537089647af9616b