Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9f4d8c3ac08574…

MALICIOUS

PDF

75.2 KB Created: 2021-01-29 17:14:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a661db67b9da16578b6c5703842c6eab SHA-1: c6bfc918aaf363975ca2152218778288bc941272 SHA-256: 0d9f4d8c3ac08574cc8821534bed42393a1cbbbbeeee5e1134422c1557958492
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://yafferge.ru/aws?utm_term=consumer+reports+magazine+subscription+cancellation In PDF document text
    • https://static.s123-cdn-static.com/uploads/4458838/normal_6002389900fcc.pdfIn PDF document text
    • http://reweder.site/critical_action_gun_strike_ops_gameplay97nct.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413362/normal_6007ccefd3876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_600c8f7fe2aab.pdfIn PDF document text
    • http://nat-yoga.space/win_10_launcher_apk_proai6n8.pdfIn PDF document text
    • https://cdn.sqhk.co/rotuzuwibi/sdViitI/civil_war_1862_ios.pdfIn PDF document text
    • http://sale20.site/reproduction_in_pteridophytesg9y45.pdfIn PDF document text
    • http://sunny-web.ru/83440149467iml3b.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/hi3gdig/34953352572.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/jufowokedunod/wobumoraxisefekovofu.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/international_business_management_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/46934446030.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/chiari_malformation_uk_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/mozosijige.pdfIn PDF document text
    • http://lenixad.epizy.com/nomuniw.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/63374306775.pdfIn PDF document text
    • http://bopufadepop.epizy.com/creating_a_budget_spreadsheet_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/simple_vimeo_er_chrome_extension.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_off0000e770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE770 5348 bytes
SHA-256: 53853799c08f815db0ee05e1ab8773e3e826d0f2eae1ea8a5a7d8601edf3d1f4
font_01_sfnt_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 11180 bytes
SHA-256: fce7904418e8c7b082005369c950bb16cf3e3f95287ce321bd5319d39306cad7