Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de83cc012503384…

MALICIOUS

PDF

80.2 KB Created: 2021-03-01 13:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a71a390a22caf9745e7242f8be722e39 SHA-1: cbcd7258f156764fa7074a8ae47fe79d9a89feca SHA-256: 3de83cc012503384061c98ddd6317efb69a3130375c1b4dddb2af25bb125585d
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://maypoin.ru/strik?utm_term=pirates+of+the+caribbean+piano+sheet+music+beginner PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5fcd9ad61a178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5fe826f69cda5.pdfIn PDF document text
    • http://mon-cmbretagne.best/direct_object_pronouns_french_rules7ygh4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466664/normal_603bcf8e5b23f.pdfIn PDF document text
    • http://matras-24.ru/57443639082sb0rd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415518/normal_60301a3a48632.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465151/normal_5fc9c07783f66.pdfIn PDF document text
    • http://genusadnlo.space/jovobuxijubukofufuvudk54yu.pdfIn PDF document text
    • http://tomandbxof.site/critical_race_theory_definitionj9als.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427523/normal_5fca3cc25ff96.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/gezetega/cinquain_format_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/gexunarenitokenukok.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/kopidewevi.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/95748769526.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/student_anecdotal_records_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/nsw_bdm_change_of_name_form.pdfIn PDF document text
    • http://fijijap.rf.gd/alif_laila_drama_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/adding_integers_worksheet_answer_key.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_off0000fa3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3C 5540 bytes
SHA-256: e5134f1f9051c473907f58d83694eaa513db1c116cef8b9e434b17c384b9f20b
font_01_sfnt_off00010ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE9 11348 bytes
SHA-256: 9fd3ce874fda64efc2611296957d387c63a09a5fa14226ae4a9a6a40258cd870