Malicious PDF — malware analysis report

Static analysis result for SHA-256 18869bcfbe2539c6…

MALICIOUS

PDF

73.1 KB Created: 2021-02-12 04:17:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2c88f652db518c62f1f729807c189074 SHA-1: e123f487b631364a7bd9ed9eef11c33259a09870 SHA-256: 18869bcfbe2539c6842b8c8e8ad12bb79468a38ba8a3643fdccbe2e6e1c5241b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wix?keyword=guardians+of+the+galaxy+piano+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4426953/normal_5fe46548939c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464861/normal_602245e1b7025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_6013ef8755b37.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/wudibirewuduto/55175353689.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/boolean_in_sqlite_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/famopolaxupimake.pdfIn PDF document text
    • http://zezazemana.epizy.com/b_w_matrix_804_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/number_line_addition_worksheets_year_2.pdfIn PDF document text
    • http://kitojob.epizy.com/garador_s_flight_piano_sheet.pdfIn PDF document text
    • http://xivegujox.epizy.com/kufatojapezuzuvefonude.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/interior_design_false_ceiling_home_catalog.pdfIn PDF document text
    • http://nazasasamuk.rf.gd/11140993844.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/33688667396.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/65051010780.pdfIn PDF document text
    • http://widurema.epizy.com/6123770292.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/blade_and_soul_stage_2.pdfIn PDF document text
    • http://wotisonuli.epizy.com/71576708465.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/weather_report_berlin_nh.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/baramati_city_information.pdfIn PDF document text
    • http://dowinoxerirud.epizy.com/ppt_to_cdr_converter_free.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_off0000d36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36B 5504 bytes
SHA-256: 973837e7ed782bad23160cd4494e9382643af5505d9763c541cfe09890dc90f4
font_01_sfnt_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 15152 bytes
SHA-256: 61e1b49dfa76c34bc156572c23da8167a6ccb93dafc5a7f20f17c5c413d6c108

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