Malicious PDF — malware analysis report

Static analysis result for SHA-256 583e2d2153014097…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 14:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4824f9eebd2e22bb2b6095e7df289b7b SHA-1: 729d0ef31b40bed5be7e843aa198c98e42a2ed9a SHA-256: 583e2d215301409772433781d8dd3cc386041abb3eff16b70bee4ee3c5f944dc
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://leonvi.ru/award?keyword=what+is+considered+a+good+acid+ratio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468255/normal_6011655f7b3b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480756/normal_5ff1b25fa50c2.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/b7njfhh/68201478198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_601d3e9b2a5a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374181/normal_602f432ea97a7.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gdieihY/windows_media_player_mp3_free_music_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/HmjcIgf/kivewotawekipijufeledinez.pdfIn PDF document text
    • https://cdn.sqhk.co/vexakebano/Eidjhbc/95523084935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415518/normal_60301a74b954c.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/ihjaRgg/dude_perfect_bowling_trick_shots_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://japinoxizidunub.myartsonline.com/fuvaliguwojofewixijofil.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/upkar_railway_book.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/how_to_set_up_a_hotspot_on_my_iphone_6.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/35915355251.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/gas_chromatography_mass_spectrometry_principle.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_off0000e042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE042 5180 bytes
SHA-256: fddf96ea3a5f4f3852ac5664108931388862bdf32b84b30f5ed9107749775a23
font_01_sfnt_off0000f1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E6 10412 bytes
SHA-256: 5c1dff7d8a467f2f273aeaf575438f0ae2e262742f1ca45bcf2878fddb1ae1f3