Malicious PDF — malware analysis report

Static analysis result for SHA-256 467ee92e33495255…

MALICIOUS

PDF

74.6 KB Created: 2021-01-30 04:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ea56f1f95fb87944efb38f0045a84f7f SHA-1: f86ec202c6963f5005ae2a34b9464689e70aafb3 SHA-256: 467ee92e3349525524d5c9fc0343dda147903f1c3e3745f3376d03c71d97c0e2
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=live%20asteroid%20tracker%202020 In PDF document text
    • http://rekabiwuxu.22web.org/bafovet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5fc7af3830cc7.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/8522424657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451950/normal_5ff1fa229af26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372104/normal_5fde66dec28eb.pdfIn PDF document text
    • http://xisulekotitis.iblogger.org/rawajinositanikixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500430/normal_600f2cef829d4.pdfIn PDF document text
    • http://tuzurew.iblogger.org/education_board_result_2019_full_marksheet.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/gitipelut/70836014048.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/ftl_unlock_all_ships_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/adding_fractions_worksheets_grade_4.pdfIn PDF document text
    • http://wiroweri.rf.gd/fosemisaramufugenemit.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/pc_app_store_uc_browser.pdfIn PDF document text
    • http://fosixokosed.rf.gd/linak_la36_datasheet.pdfIn PDF document text
    • http://vonizevugopu.rf.gd/50261306177.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_off0000e41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 5240 bytes
SHA-256: 5ca61d0e4ae879efe594e62f7bc68038d80669357316af096b238ac142a6d865
font_01_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 11664 bytes
SHA-256: b4fdfe0555b9f4dcb686081cc2876f478953133fae05cf885acdb204cf69731d