Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84c3a0f57dc036e…

MALICIOUS

PDF

69.1 KB Created: 2021-02-22 04:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f3ef13a7622ef5224725766271bd6b40 SHA-1: 60b2d5a41fe493b9f09e4bcac6c6cadfc7284a68 SHA-256: b84c3a0f57dc036e4b1e1881866c1921bf976f8fe5a60d1bfb07cdea8419646e
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://bologen.ru/wb?keyword=how%20to%20fix%20ps%20gold%20headset PDF link annotation
    • https://cdn.sqhk.co/noligigibar/huifmdc/crossing_the_border_into_the_us_illegally.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410983/normal_601f29253e7ab.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/fI21uUT/jenotuxesituvepofugulo.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/fu0ZKCF/wowizogu.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/FggPcic/aqualife_3d_mod_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gulaxemetila/pieH5ia/lopotuvalez.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/pibajuwi/cute_cats_colouring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/sbi_annexure_xp-_1.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/davanaperarav.pdfIn PDF document text
    • http://xedovafimolodem.epizy.com/fuxudunurelijijotobamepiv.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/free_printable_sheet_music_music_box_dancer.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/ff7_guide_book_ghost_ship.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/35705375296.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/que_es_un_balanced_scorecard.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/h_pylori_eradication_nice_guidelines.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_off0000d2ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AB 5328 bytes
SHA-256: 4faed77452cf1c7894fcc042822ef3fcaa2fcfaef9b966a74a4cf749316ba327
font_01_sfnt_off0000e4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E5 10240 bytes
SHA-256: f999e407d87307eacb80b7f443528533185a2b2b1d09f2fa57685a745251a27c