Malicious PDF — malware analysis report

Static analysis result for SHA-256 f430f296e253fe04…

MALICIOUS

PDF

65.0 KB Created: 2021-02-18 03:13:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a83c2e1ec43dab0765ffcb033d1e9e2e SHA-1: e288c639d97ff04892d1b636516cfd83f42d7476 SHA-256: f430f296e253fe04a5d913c1e1fdb6e0c925c224c0961953546a7df38301311f
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://jottigo.ru/wix?keyword=lean+on+major+lazer+mp3+download+320kbps PDF link annotation
    • http://kyhni.site/854608729733xblj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5fd60d4574bbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465398/normal_5fe98e02d7551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_600e45e67b74d.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/tozaduliwubega/visible_frustration_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/canadian_coin_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/android_phone_tracker_using_imei.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/hallelujah_piano_sheet_music_scribd.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/geferizupotor.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/printable_butterfly_worksheets_for_preschool.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/aneuploidia_y_euploidia.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/wadopozom.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/mmhg_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/august_underground_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_off0000ba69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA69 5904 bytes
SHA-256: a4b67d95728f8aa082a09da4e01b2b3bdc687fc4bf6a47aea2e3c8452868bc0f
font_01_sfnt_off0000ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE84 14260 bytes
SHA-256: cbed713c9c3305ae0b0ea5a523970449bbe3e86ea013161e78b6041755cbf45e