Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3c98fe77e26782…

MALICIOUS

PDF

71.4 KB Created: 2021-03-04 15:30:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c4b32a82584b34b60964701ce1f60fe7 SHA-1: 942770d3ee4bf96012a714da3ec3d3f59cad93c5 SHA-256: 8b3c98fe77e267822649aff87cce199fe5889d225735c269a2d8d9fc403afc66
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://gimoguvi.ru/award?keyword=can+you+change+the+battery+in+an+ipod+shuffle PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467561/normal_60402da116630.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/hhj8gdD/94743386516.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/fghfcjb/swordman_reforged_mod_apk_2._0._61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446170/normal_601dfa4b1395f.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxaguzifep/ew8pjgr/kobe_lebron_james_tweet.pdfIn PDF document text
    • https://cdn.sqhk.co/fibafape/FF8DijQ/natorafezatujuwegivomip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://safadixuzet.rf.gd/kiworivifutal.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/chromium_edge_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/leadership_and_self_deception_study_guide.pdfIn PDF document text
    • http://tuwofexuguxu.epizy.com/15043612321.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/zosyn_oral_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/8666894024.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/sas_enterprise_guide_libname_oracle.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/boolean_algebra_worksheet_with_answers_class_12.pdfIn PDF document text
    • http://fosixokosed.rf.gd/gedisamamomupi.pdfIn PDF document text
    • http://lepejifilafimif.rf.gd/libros_para_aprender_economia_y_finanzas.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/wawujen.pdfIn PDF document text
    • http://zodexalanokaxaj.rf.gd/farmall_super_m_parts_catalog.pdfIn PDF document text
    • http://tobizexajivuvob.epizy.com/asphalt_6_game_for_mobile.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_off0000d8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C3 5564 bytes
SHA-256: a50195a60f096fbeaf67857a30606e80238be6f1340ec19091b4a4fd512421b6
font_01_sfnt_off0000eba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA6 10720 bytes
SHA-256: 8a8167698f012a78aa81aeda866ec373bc63d5fcb192459dc28fbff7cad28f98