Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b42a933bb9eed45…

MALICIOUS

PDF

73.2 KB Created: 2021-02-11 05:06:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3188b5df7dd43ecf8b226c709008e61d SHA-1: e2453f7c3154aaa41bde159a7d2748f88a161806 SHA-256: 4b42a933bb9eed45c9b62fb369c692dd16fc823d545dab6c61a9082f2e32520c
136 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
  • 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/wb?keyword=the%20chipettes%20movie PDF link annotation
    • http://topsale.pro/lfs_jant_yama_program_indirjd80r.pdfIn PDF document text
    • http://midutabumi.22web.org/pcr_protocol_cdna_template.pdfIn PDF document text
    • http://maska-respirator.shop/professional_nails_done_at_home_near_me3j94q.pdfIn PDF document text
    • http://future-techno.ru/kaplan_asvab_prep_plus_reviewt7581.pdfIn PDF document text
    • http://tumerasiwabuzip.22web.org/8297285461.pdfIn PDF document text
    • http://organic100.fun/descargar_reproductor_vlc_para_tablet_androidbo0at.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/vukujidor/wirunobuzadaxupe.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/85536705159.pdfIn PDF document text
    • http://lopusewagini.epizy.com/62929530582.pdfIn PDF document text
    • http://fowasabitafal.epizy.com/75468744241.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/70151565410.pdfIn PDF document text
    • http://ritanuwo.epizy.com/mufofofepetokugoz.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/online_camera_viewer_apk.pdfIn PDF document text
    • http://xedaripa.epizy.com/31331063302.pdfIn PDF document text
    • http://datasixiva.epizy.com/bodmas_fraction_worksheets_for_grade_5.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_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 4844 bytes
SHA-256: 936bdb647322c3dcb33cea191fa734849090e1c55b173fb7255385c11d720f7f
font_01_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 12304 bytes
SHA-256: 9c0c9741982276cb3c780675e9c4286f010b687e124d26cde8f947c3fd960230