Malicious PDF — malware analysis report

Static analysis result for SHA-256 43949c2c25aa9234…

MALICIOUS

PDF

71.6 KB Created: 2021-01-28 18:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1ae1db1d1b13957205e6669ca4b927f0 SHA-1: e2ec1eeabe75d5b6d01407ce4c2356ab87b14091 SHA-256: 43949c2c25aa9234f9d9ea7386271e91313259e5b464c6bef1e62a8d46e0965d
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://trafftec.ru/wb?keyword=cake%20decorating%20supplies%20kit PDF link annotation
    • https://cdn.sqhk.co/relulapezele/ifghsfG/idle_island_mod_apk_an1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_600e8fac6a2a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fcefff3c24af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412606/normal_5fc7aeb9113ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426413/normal_5fd369147eb9d.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/dNAHSJ8/n7player_music_player_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446650/normal_6003fbb9e5e3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fcf58a02971b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5fe15f5b00772.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409621/normal_5fffb77a0cdf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5fca929419fa5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367667/normal_600396f21af37.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/fogh2ii/dominos_online_deals_50_off.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/kakef/drivers_ed_online_texas_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/classical_music_for_studying_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/1099355741.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/todinurevuxexerix.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/architecture_design_software.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_off0000d98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98B 5212 bytes
SHA-256: 8743382dc05a1f5634339ceab431226de8c8ec1c0e58a560719fe7d347802c60
font_01_sfnt_off0000eb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB56 10820 bytes
SHA-256: 3313539fc399be3353ca7f1c94c113beb2a89c20f16c03334e48c867dce329ac