Malicious PDF — malware analysis report

Static analysis result for SHA-256 d330cda4be2f3f9a…

MALICIOUS

PDF

72.9 KB Created: 2021-02-23 09:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0f3e4bddecbca4d8b6fcc4681fd0e404 SHA-1: 06fbcc33555d66caf236683a85d50688081775c9 SHA-256: d330cda4be2f3f9a3cbf0080761f0dd8e135a3a4b807964781f58271e7c50830
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=network+marketing+for+dummies+free+pdf In PDF document text
    • http://nawogevimogagu.22web.org/voboduzazopumizu.pdfIn PDF document text
    • http://tepafuvofes.iblogger.org/dipifaxosegavaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5fd89d4c13290.pdfIn PDF document text
    • http://ketezuk.iblogger.org/84725664485.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/xunilukegez/lawn_care_business_pricing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/mosupixelabeteredateni.pdfIn PDF document text
    • http://zedakukabizo.epizy.com/malofamukiwalebifarebovev.pdfIn PDF document text
    • http://ribigilubawedom.rf.gd/60484982534.pdfIn PDF document text
    • http://veputowiki.epizy.com/intellij_format_code_java.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/bbc_bargain_hunt_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/android_5._1_google_play_services_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/lukuxejogozawusuvedir.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/tazikenuwe.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_off0000dfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDC 5456 bytes
SHA-256: ee4754d2e78eb373d1026cff1909f69597830cca027eb921ff40bfa15fbe8d24
font_01_sfnt_off0000f270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF270 10736 bytes
SHA-256: 0a4307e9cdc42fae73a2940969edaa1ee38c44cb61af308e7580cefbe67240c8