Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfe96ece888f456…

MALICIOUS

PDF

74.8 KB Created: 2021-01-28 03:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a37e4dff0b588f574eba83e0f329b38a SHA-1: e60ff516a2465ecec58f02b25bf87d618ca4d1c5 SHA-256: 2cfe96ece888f456245e659d6a6bfbfa0b28bdcb879d60e8438200e7b0e1158a
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://gettraff.ru/wb?keyword=mechanism%20of%20death%20definition%20simple In PDF document text
    • https://cdn.sqhk.co/wevafofed/RVLLlhc/sefilazoseroxazarakuvofo.pdfIn PDF document text
    • https://cdn.sqhk.co/mitajaso/ejfhjOb/wajeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465151/normal_5fd61ff301136.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/hbeSKgf/21074846393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379234/normal_5fc5ec5a27b1e.pdfIn PDF document text
    • http://hookup671.site/cartesian_diver_lab_answerszp1ml.pdfIn PDF document text
    • http://private-channel.site/iframe_show_base644i4fr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5ff80022bb12f.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/YjaXXsL/norewerevogufokavi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_6010e3f4aa4e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385412/normal_5feb724ba8bd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5fea16cdddfb0.pdfIn PDF document text
    • http://trafikcezaodebayisi.com/5488384505kh486.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365608/normal_5fdd47f837652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_6007f27c313db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502246/normal_5fd3d2a628054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493600/normal_5fe19f329e65d.pdfIn PDF document text
    • http://gigurokubi.66ghz.com/megexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35F 5304 bytes
SHA-256: 7af6be79495af86001e79a244e3a439185bcc7913855db6c5cb0cd0ad8bb4efb
font_01_sfnt_off0000f55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55B 12384 bytes
SHA-256: 577f9f0a0fc2c6fdd72529241c45c813e0e6b9ebfc4a8d3045ba94aa774262c6