Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca0b683dfcfc5cb9…

MALICIOUS

PDF

63.7 KB Created: 2021-02-16 12:32:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5146055ec705d2063e1f4b7b7ec7ab67 SHA-1: ac2b25fb73c1a737b77a6325f825ab5838543dbe SHA-256: ca0b683dfcfc5cb92ea9661169c1e51259ee49c8fda0c4ac712eed0cd91a7bda
136 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
  • 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.
  • 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://bologen.ru/wix?keyword=thomas+calculus+10th+edition+answers PDF link annotation
    • https://cdn.sqhk.co/vafegijateno/gdDjcgc/super_soccer_champs_2020_apk_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5fcb0127c07ef.pdfIn PDF document text
    • https://dizivabuzazelu.weebly.com/uploads/1/3/4/0/134017784/81e4725dc.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/4782678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_5fd3afd2380db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5fee379ed55b9.pdfIn PDF document text
    • https://cdn.sqhk.co/dodipenameki/BnClidi/97533418028.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/clM6njh/aesthetic_videos_for_tiktok_sad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_6022d746a671e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464707/normal_5fedbd585c17b.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/ia2OMKP/xuwivudowivofikukuwab.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/tedowafomaru/xovijavatajimukori.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/tatele.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/27760704893.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/bebezowezujaliboxufipipo.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/dezosigogawogaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/fill_out_ei_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/adobe_animate_cc_2019_32_bit.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_off0000bf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF61 5412 bytes
SHA-256: b61557c3de2cac4f41f1a5166bc533788745781f750e8c530e7b180012762dc3
font_01_sfnt_off0000d1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AE 9452 bytes
SHA-256: c342465ce0fcd6422c52c5127cec4eeddbb171c861467f54a9e6501a9ad1c2b2