Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92047ef04759fe8…

MALICIOUS

PDF

71.6 KB Created: 2021-02-28 02:34:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 01f3c2de0ce1a4fa855b680c35f1bdf7 SHA-1: ed142b1f95d996c1b4af824086504a95843ec7c9 SHA-256: c92047ef04759fe8230fe4365d3c0454d3f37db7b414d6d2d9ec6f65ab90ddf1
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://botokaw.ru/award?keyword=blackstar+core+40+v2+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414501/normal_601e06913ef9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467298/normal_5fe971f7827ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_5fe01b2074a6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479691/normal_602b9682a6fd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_602d05a307849.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/hZePe3A/67608371079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425737/normal_5fd76c56b26f2.pdfIn PDF document text
    • https://cdn.sqhk.co/nububufi/dFXjcje/food_lion_sunday_hours_midlothian_va.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5ffd8716ce9d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408184/normal_602ec288ef64b.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/iiijhe8/27127278451.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuwobema.rf.gd/bahubali_1_hd_video_songs_telugu.pdfIn PDF document text
    • http://jorowiwiboxizuk.rf.gd/81410542028.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_off0000dc34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC34 5420 bytes
SHA-256: 2eb1d0cf9e885c2fb7f9084ea23e2144a500c4163d65c4b6ed33a79f65e5c68a
font_01_sfnt_off0000eed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED1 10172 bytes
SHA-256: 4c19e5dc58e5a10cc365a38b9c1d472a46daabb86517d0e6e85fbd5f4c4f633f