Malicious PDF — malware analysis report

Static analysis result for SHA-256 2203c6b94bc55079…

MALICIOUS

PDF

78.8 KB Created: 2021-02-12 12:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a812b5efc1fda6ce30f31a6bb285af35 SHA-1: f4cf3d3dc3014ca753e57694c951ca9fda434d25 SHA-256: 2203c6b94bc55079724437d33506faa04e40ac31e974136c4490da805f6d631b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wb?keyword=astral%20form%20druid%20legion In PDF document text
    • https://cdn.sqhk.co/bozadukopufu/icFhdge/download_game_bounce_tales_for_pc_full_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_60160a829080b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529780/normal_5fe613d08ea7e.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/dgd6nBB/nujekanipifi.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/hptnHgd/46659823817.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380858/normal_60006b58b378b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443810/normal_5fef6f1327957.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/geDggie/balukotenelolo.pdfIn PDF document text
    • https://cdn.sqhk.co/wokuvaxevaji/dUjjvDU/rizin_ff_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/hNjcicV/varasuxipod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusatepalu.epizy.com/83132043826.pdfIn PDF document text
    • http://kevikawimal.epizy.com/steamworks_common_redistributables_slow.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/swimming_merit_badge_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/exercises_on_past_continuous_with_answers.pdfIn PDF document text
    • http://tojopoxirer.rf.gd/koxagedarixasufi.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_off0000f869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF869 5216 bytes
SHA-256: b21bd0c7c922729a29cc6135fbb82060510ea4a66d5f9f900de0b58ea46058d1
font_01_sfnt_off00010a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A13 10780 bytes
SHA-256: 5ca5a90fd467a6e9a43de86a3df4fb1467e49442835e4c4a5fd189660d9cf5c9