Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd1d8a754f55c26…

MALICIOUS

PDF

66.4 KB Created: 2021-02-26 23:32:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9149a105ab248d98b084770337f7132d SHA-1: a895596d7c6c43fef4abd593d8b505cefbb98940 SHA-256: edd1d8a754f55c26bf093ca1da64427dd7f1ac45c62f505ca72e116abf38d161
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://zajinet.ru/aws?utm_term=ion+exchange+chromatography+lab+report+discussion PDF link annotation
    • https://cdn.sqhk.co/gorisaburo/jjZ4hB8/archery_world_cup_2019_netherlands.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459478/normal_6010f37c5c44a.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/bhfijib/dhoom_2_songs_singers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374700/normal_5fc800e82a833.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/igfiubd/9518633179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_6011ca7f58359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5fe6508952f63.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/6icjbmK/king_of_thrones_map.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/fuvidokibet/lysogenic_infections_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/73144247936.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/sinupugosakubamixibozos.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/after_effects_cs3_project_files_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/62324357224.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/does_porque_mean_why.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/81205490805.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_off0000c2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C3 5732 bytes
SHA-256: 75a1c42c913f4c21103c200b29f1adb6f1eae59469b22c9ae67f43461281ec9f
font_01_sfnt_off0000d61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61E 10844 bytes
SHA-256: 5f49e76c973702ae1b0e27ed21fbb12917c3e88be8b95025ed2adf14df2ce9b3