Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fbbd064c52d2df…

MALICIOUS

PDF

35.2 KB Created: 2020-10-02 09:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: eb846ba810b35adc60d8bddbcbd88604 SHA-1: bcda932265662616e698d82febe612c86b5682c9 SHA-256: c0fbbd064c52d2df991b8c31cf8d5027c10ef2b10794f6d574eb3d457568a5ba
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=hdfc+bank+credit+card+statement+pdf+security+password In PDF document text
    • https://site-1039513.mozfiles.com/files/1039513/33568787727.pdfIn PDF document text
    • https://site-1036734.mozfiles.com/files/1036734/malexudijoxa.pdfIn PDF document text
    • https://site-1041859.mozfiles.com/files/1041859/lemovubudupudo.pdfIn PDF document text
    • http://bedilex.joanieyanusas.com/uploads/1/3/2/6/132695306/462114.pdfIn PDF document text
    • http://files.mzavos.studio/uploads/1/3/2/7/132741475/vafebafajatosizozavo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da05c51-75b4-4393-8083-e41cfcd0df43/punewaxerivudizelofudig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d631235-3d74-44d3-9859-689084e3ca70/zosomanetezip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ac25b11-2cd9-484b-a875-c82928e6bfca/2364050814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f476f2d-84c2-421c-bb5c-37e063ea0977/57283290187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faa921e1-ca68-4380-abd7-29d439744400/wupesolavawikerogen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/614050d7-32c3-4eb7-bd78-25c0af9abfec/24698927271.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_off00004c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1B 5628 bytes
SHA-256: ba5ff3fd905051c90db73f0183451bd9cea7940a1641657e7a064a0256508df4
font_01_sfnt_off00005f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 9528 bytes
SHA-256: 71b30dbab258dc69ae4aadc609e10a43b24616c1651196e86b285be353f86c9f