Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e7098056917f6f…

MALICIOUS

PDF

77.8 KB Created: 2021-02-18 10:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f982c05c144656e74c6432422205c23 SHA-1: dba8c1aefcfeb5f154215ecd9bfac39d994f800f SHA-256: 82e7098056917f6ffe7a6642bc3f12646234de6855d4f1dbd6f2cae19dd1290b
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://leonvi.ru/wb?keyword=easy%20guitar%20chords%20youtube PDF link annotation
    • http://clyb-wylcan3.space/android_os_freegomy5.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/dgjjeDn/pavogivijujeseg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411501/normal_600d9b32d6ee8.pdfIn PDF document text
    • http://lami-lashes.site/integrated_math_volume_2_answer_keyww338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5fdc66e3b6d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_600e60e69d293.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447662/normal_5fd071928f217.pdfIn PDF document text
    • http://bcipreactivaperu.com/reversion_value_real_estaters3co.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/zagapaxa/90985497509.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/autotune_free_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/anime_tagalog_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/boulevard_des_airs_bruxelles_free.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/eyes_of_an_angel_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/34382274367.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/xawaziwopujavezekopazap.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_off0000f3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C3 5368 bytes
SHA-256: 7fb47266ac66cbc1ba6240709f281fcaba528a71874b4f43a366bb24e8888af3
font_01_sfnt_off00010602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10602 10796 bytes
SHA-256: 5581d7ffd6b6026d416942ff38e0b589538f3a834cdc7c2756de2f0142fd0ed2