Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7606ae887eed578…

MALICIOUS

PDF

62.6 KB Created: 2021-02-15 02:00:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8e3e847ac8e301ea06272d45e6880f23 SHA-1: b066e2b58d69531e716e098a20d14622f1bd1079 SHA-256: b7606ae887eed5789493e621016a36d9d02e4476093472e174ec9eea08ce2872
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=umd+duluth+soccer+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4501804/normal_601c98fd15e7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417040/normal_600801a05c35a.pdfIn PDF document text
    • http://fobimuwoxik.iblogger.org/bootstrap_ecommerce_templates_themeforest.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5ff298988061e.pdfIn PDF document text
    • http://mefizilexofe.66ghz.com/baxuwuranan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gedikoti.epizy.com/bhakti_bhakti_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/metabolisme_lemak.pdfIn PDF document text
    • http://dupetomumipur.rf.gd/babu_assamese_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/nfhs_concussion_in_sports_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/ui_bootstrap_tabs_template.pdfIn PDF document text
    • http://bazogojuzularib.rf.gd/gamiredogifanepekonudu.pdfIn PDF document text
    • http://kitasiru.epizy.com/vuwitige.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/79182697820.pdfIn PDF document text
    • http://satekivu.rf.gd/40624519472.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/gotetexabaselu.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/33930856924.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/gruffalo_characters_colouring_sheets.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_off0000bda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA6 4960 bytes
SHA-256: 5590951ad6aece421dcdf16156a6de9bbab79ec90805e54e2bfacc657c5dfe7f
font_01_sfnt_off0000ce57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE57 9184 bytes
SHA-256: 88947532a2d3b1da24555bc10a8098b8eaeacd87c8e1529288de85d408de56ab