Malicious PDF — malware analysis report

Static analysis result for SHA-256 65151e4c6e110f37…

MALICIOUS

PDF

70.6 KB Created: 2021-02-28 20:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4a250b1185cc6c8df3d2892435629485 SHA-1: baed4b2e0c204645a143882dfb0facdc5fbf2ed0 SHA-256: 65151e4c6e110f372f0746c12cb21178fd7c071d4978b463e9b1e378a218dbf4
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://gimoguvi.ru/wix?keyword=urban+dictionary+sex+acts+by+state PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386593/normal_5fef633b1ee60.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/eWlufy7/solupa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401716/normal_5fc8e7dce2024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5fcbdaf963776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_60357aa6a0c55.pdfIn PDF document text
    • https://cdn.sqhk.co/medukukekuke/gdvr02o/tesan.pdfIn PDF document text
    • https://cdn.sqhk.co/daxutoxod/gjbvtgc/jawunobidakav.pdfIn PDF document text
    • https://cdn.sqhk.co/nijedesakuj/gjejhme/weekend_update_last_night_on_snl.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/gghf0AQ/47742225776.pdfIn PDF document text
    • https://cdn.sqhk.co/soxosovave/XNFjhoD/38291849409.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/gagotaniwipure/28424033805.pdfIn PDF document text
    • http://sifepilojiba.rf.gd/vilevewokidenatujude.pdfIn PDF document text
    • http://kafudunafow.epizy.com/lewinubopimaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/togolimikezon.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/html_select_form_post.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/guitar_songs_no_chords_beginner.pdfIn PDF document text
    • http://luzoxone.epizy.com/briggs_and_stratton_engine_model_by_serial_number.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/xusitademaketoj.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_off0000d9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BE 5204 bytes
SHA-256: 0700617697277166d3f9beda0a260b06dc231917a646ade30e1a1eca59e2d1b1
font_01_sfnt_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 9904 bytes
SHA-256: e6511830d9ca93a8e69ef29ec618a0313a59ad9c802386d914b85b0fd2fa7922