Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5fd3c2efa7c2e6…

MALICIOUS

PDF

62.9 KB Created: 2021-02-20 15:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e0444a54122cb7f4d3711f33d35e6c74 SHA-1: a7a0c1a5cf685d9e50e8cd4022a7d3f9437e1184 SHA-256: fd5fd3c2efa7c2e639fad0d29b1e50da33506b7ad62ad1562370416a5a029429
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://baarspo.ru/wix?keyword=diamond+method+factoring+worksheet+answers PDF link annotation
    • http://gonzo-3d.com/cafe_brunelli_menullzkn.pdfIn PDF document text
    • http://strahauto.website/ejercicios_de_subneteo_redespvrhi.pdfIn PDF document text
    • http://clyb-wylcan3.space/zona_abisal1j1fw.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/b1789gj/instrumental_rap_hip_hop.pdfIn PDF document text
    • http://specialsale.info/96117327545pm4dc.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/hgeQjiY/83948857679.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/jcj68WP/desabagumatatasozevetop.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/dBIKjAt/ikea_dresser_malm_brown.pdfIn PDF document text
    • http://podarokinsta.online/fly_ludovico_einaudi_sheet_music_pianoezclr.pdfIn PDF document text
    • http://bubble1.space/ghana_police_admission_formsg5rxo.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/zerepuzuze/90461211860.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/rakanugedovofidu.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/gevagotabejokemibovur.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/91520632749.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/44759207241.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_off0000bb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4B 5556 bytes
SHA-256: 07ece90998e5b766d6548c47f6d3c7137c45170a23f874b426670c2705708e93
font_01_sfnt_off0000ce1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1D 9440 bytes
SHA-256: 3643b7a7202116f354906f08b48f37ba839b34a1821f96517528f97ed87f5bb4