Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c1b596d55c22ab…

MALICIOUS

PDF

71.1 KB Created: 2021-02-20 02:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cc06713c6f990b0420e25cf957da4bb0 SHA-1: 92573d891a6fa94914d8f32d23e98b8201011616 SHA-256: 10c1b596d55c22ab979ee3178e81147f20d2766f0cf96b700181675275dca33a
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://druttle.ru/wix?keyword=box+apk+lulubox+apk PDF link annotation
    • https://cdn.sqhk.co/jifigetuxu/fyRqOia/jixunaxukagediwifunowuxow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_601487f52e058.pdfIn PDF document text
    • http://specrazreshenie.com/takeuchi_tl150_workshop_manuale3k2p.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/dijjgfr/65735029900.pdfIn PDF document text
    • http://zdsshop.top/52467388374pgipm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5ff8fd849dcc5.pdfIn PDF document text
    • http://maewallace.com/764847344328eiyr.pdfIn PDF document text
    • http://hookup157.online/school_management_system_reportuheyh.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/efNibjd/file_manager_download_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/vR6O2jg/4_function_calculator_target.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/hbOXFBI/alive_in_shelter_mod_apk_revdl.pdfIn PDF document text
    • http://ctyr.ru/book_of_the_five_ringswylag.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/xeropizuwe/6933922430.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/uk_parliament_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/payback_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/latiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/21930931231.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/concurrence_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/lalki_chunariya_odh_ke_video_song.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_off0000dcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF3 4860 bytes
SHA-256: 03ec5c5dc6cf84ca9eb45be2438663d3c5e73526d680bfdfffac20e90e058efc
font_01_sfnt_off0000ed95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED95 9920 bytes
SHA-256: ab144c65d7edc762b3b7be7091d1358027ff191b4353e4b1e35423ee735f009c