Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4457a4d56ad7fe…

MALICIOUS

PDF

70.2 KB Created: 2021-02-26 15:10:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2b9eddb92602bbf71c2a288194e1f760 SHA-1: 3c35035e3c55a48c954bb24833f2810043566c87 SHA-256: 6f4457a4d56ad7fe27080aa957af2a14388e19b9cc4cc965e8d478b6c76d2053
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/award?keyword=virginia+woolf+novel+beach+crossword+clue In PDF document text
    • https://static.s123-cdn-static.com/uploads/4369663/normal_5ff138fe23b1c.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/oh_danny_boy_deutsche_bersetzung9vesj.pdfIn PDF document text
    • http://storeplus.pro/lenupaxadopisuninulezewus86lw0.pdfIn PDF document text
    • http://doctora.club/85214205999wlgxk.pdfIn PDF document text
    • http://sewasapeko.22web.org/modern_probability_theory_and_its_applications.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481515/normal_5fd6dbef1f525.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403274/normal_5fcfb1233a3ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5fe467b8e3651.pdfIn PDF document text
    • http://kopolebukerone.iblogger.org/jndi_connection_in_pentaho_report_designer.pdfIn PDF document text
    • http://znasila.ru/samsung_un40j5200af_specificationsabxw0.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/pexodugosa/avatar_2009_dual_audio_free.pdfIn PDF document text
    • http://jaduwogozomikuj.epizy.com/black_and_decker_lst136_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/zuvisuwozufo.pdfIn PDF document text
    • http://bodotekufuw.rf.gd/83867928688.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/fredric_jameson_archaeologies_of_the_future.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/59356800961.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/67579553359.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/accreditation_canada_standards.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_off0000d3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CE 5540 bytes
SHA-256: f4672b4d7ab60a1f1f4de818fae059725b2445cfda0f8f4dc25771a1032d4732
font_01_sfnt_off0000e6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C3 10744 bytes
SHA-256: b8cc7c0d009ee43cdb0e3478944b5d21757e1b49773d87b56e3378b6d234d4fb

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