Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b6c0580e9162c3…

MALICIOUS

PDF

75.5 KB Created: 2021-02-02 11:33:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3e0c93eee8881f5795a7d3d8459f05e0 SHA-1: c2aa04d9d3e03e4ecd545c3b006c9055dcaf1c6f SHA-256: b6b6c0580e9162c382ff8fe15e38ebd6f2c1d465e939a598d2f3408e6bfa619a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=mcsa+2016+questions+and+answers PDF link annotation
    • http://copyrightnotice-ig.com/man_in_the_mirror_mp3_download_joyful_noiseesbrk.pdfIn PDF document text
    • https://cdn.sqhk.co/bamikalagov/gfgfcX3/wagufogamuvegabigozesiz.pdfIn PDF document text
    • https://cdn.sqhk.co/jivumigen/RJMjbjc/talking_parrots_for_sale_in_georgia.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/hS5iija/rekifagofipoxep.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/jLhahcw/race_king_trailers.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/idm9zig/baltimore_city_arrest_warrant_search.pdfIn PDF document text
    • https://cdn.sqhk.co/dubagelojuwe/hhfZhaj/21st_birthday_cake_decorating_ideas.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/tobepuk0dpx.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/i7tntjg/jodubosu.pdfIn PDF document text
    • https://cdn.sqhk.co/savimatuv/hiNhaje/68584278120.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/cJ40ji0/91967709250.pdfIn PDF document text
    • https://cdn.sqhk.co/zirizowesaw/ii5fMjb/ezgo_gas_golf_cart_micro_switch.pdfIn PDF document text
    • http://nout-prokat.website/kevin_lynch_image_of_the_cityr89va.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/xalasawu/dupelaba.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/90224783656.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_off0000ea42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA42 5604 bytes
SHA-256: bdeee4815f04950ad50676ed1686e5b9b9fd3eb2dd2832922838d4af920afb33
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 10492 bytes
SHA-256: 235f629a1a2149dce780fdcdb4101134e50c4cc3129d173dfe86f7e02e605d07