Malicious PDF — malware analysis report

Static analysis result for SHA-256 7570fc27ee7d48c0…

MALICIOUS

PDF

68.3 KB Created: 2021-02-08 15:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f35e1e6f4f9d9deda7d7056ad81c877 SHA-1: 472293ee1c7515c491898509d4847ea84a38446e SHA-256: 7570fc27ee7d48c066d85b08147198089e40f6b966f63e345adce7c8cb1f2c02
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wb?keyword=fusionner%20plusieurs%20documents%20pdf%20en%20ligne PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487431/normal_601b5fbcb9a15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448129/normal_6018d40a3c6a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5fc966b97d0f9.pdfIn PDF document text
    • http://ruroraratotu.66ghz.com/free_sheet_music_piano_four_hands_easy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5fc61c742ccfb.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/ggjhsgc/sixojewolakitinowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410002/normal_600e498150b7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413112/normal_5ffb745bedb33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fc9344d5ccc5.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/pujirageg/79102387131.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/isaiah_berlin_books.pdfIn PDF document text
    • http://wokeben.epizy.com/breast_cancer_ribbon_pictures_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/cetonas_propiedades_fisicas_y_quimicas.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/asco_cap_her2_testing_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/cognos_report_studio_hyperlink.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_off0000cca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA9 5220 bytes
SHA-256: 61ec8c272e31e31045b29e1ce651569fc2172e257cb85914251c7564c261857f
font_01_sfnt_off0000de5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 11336 bytes
SHA-256: 39856838135d660006b924aa2e986ffcbb0368da974637eb09a7cb42709751aa