Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d33c97dfd576a1…

MALICIOUS

PDF

73.7 KB Created: 2021-04-01 22:49:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fbc58a982ea8d6f90a36caef4d8c8e1b SHA-1: 08a6ada7a10d8e164e024eecf0a02680d600fabc SHA-256: 89d33c97dfd576a123116646d71e733e0a3acfebf3aacdd6eb301e3864bf49e2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI and a heuristic indicating an SEO redirector, both pointing to the URL https://mezovuduw.ru/strik?utm_term=weber+spirit+3+burner+grill+lowes. This suggests the document is designed to lure users into clicking the link, likely for a phishing attack or to download a secondary payload.

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://mezovuduw.ru/strik?utm_term=weber+spirit+3+burner+grill+lowes PDF link annotation
    • http://cozyplacefor.rest/is_panda_express_orange_chicken_good_for_youj6ved.pdfIn PDF document text
    • http://mobukonenila.22web.org/28877442285.pdfIn PDF document text
    • http://juvizex.sportsontheweb.net/pugejafetifafepevugebuzov.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/wuromejos.pdfIn PDF document text
    • http://ccckkkkk.space/153962837798sgsk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ritarejameja.epizy.com/wawerot.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/voforirixewabefeborenudoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/bujitirasiveguvadadapazup.pdfIn PDF document text
    • http://kexojupi.rf.gd/favabir.pdfIn PDF document text
    • http://tibepaxun.rf.gd/lemep.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/zaderonirasugux.pdfIn PDF document text
    • http://wikilupari.epizy.com/62244279981.pdfIn PDF document text
    • http://zasuridedowimam.rf.gd/zitele.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/their_eyes_were_watching_god_film_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/zinda_bharat_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/goodnotes_calendar_template_2019.pdfIn PDF document text
    • http://nabasuxogakuwet.epizy.com/chapter_3_cells_and_tissues.pdfIn PDF document text
    • http://burupilejeg.epizy.com/60684525267.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/how_to_use_strongs_bible_concordance.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_off0000e24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24A 5188 bytes
SHA-256: 52295e72cbf6551cfeea05cc416d2fcb07270793456902b151b788493ad03829
font_01_sfnt_off0000f41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41A 11104 bytes
SHA-256: ceda3f69b7a3ac6ca63d0df8ec2a41b288db425ef3b75acd595b2fe566966873

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