Malicious PDF — malware analysis report

Static analysis result for SHA-256 3653af283aafa96b…

MALICIOUS

PDF

70.2 KB Created: 2021-02-27 04:06:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5984be8437f9b7b9c93c0123081c74fa SHA-1: 401c17cbadb423e8dd6fce23250d450600245b89 SHA-256: 3653af283aafa96ba2989ca4c3779d760b52867113eeac477aa6e14fa3d90f54
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://golowaki.ru/award?keyword=calories+arbys+roast+beef+slider PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407788/normal_60399edf797be.pdfIn PDF document text
    • https://cdn.sqhk.co/sologavabo/9o1S2ib/36405124603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413458/normal_5ff79d0254efd.pdfIn PDF document text
    • https://cdn.sqhk.co/bipufawawi/Q1Kghia/67804496999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417137/normal_600064a3a318e.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/acNxXjd/hotlink_protection_hostinger.pdfIn PDF document text
    • https://cdn.sqhk.co/goremujoz/JcwiawV/knock_down_door_frame_installation.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/ifzVjfJ/97070112996.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/hjidBIx/bts_dynamite_mv_teaser_record.pdfIn PDF document text
    • https://cdn.sqhk.co/norumuwapa/ifhejeA/photos_of_detention_centers_at_the_border.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/he3hijg/tennis_racket_3d_object.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/h5Ngjja/german_formula_1_qualifying_results_today.pdfIn PDF document text
    • https://cdn.sqhk.co/xipapotug/gjidjfG/rotator_cuff_exercises_with_bands_handout.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/fipijife/simavudolowi.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/technical_manager_roles_and_responsibilities.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/48473136603.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/dirty_words_in_english.pdfIn PDF document text
    • http://podaviloridi.rf.gd/88393179404.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/bedurebuvob.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_off0000d691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD691 5048 bytes
SHA-256: d123d756c33c62b47f5e38143a4a27b7394d5ea96979915620472f7ace806f41
font_01_sfnt_off0000e7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CB 10492 bytes
SHA-256: a98a72f9cedffa2c116f2b61920e9cbbdac33963536f7c94422b9db74d05dec9