Malicious PDF — malware analysis report

Static analysis result for SHA-256 1635f006fa47c303…

MALICIOUS

PDF

70.4 KB Created: 2021-02-11 14:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6adf0eda219aca6f0ba2a0e3bc86500e SHA-1: 91b71922cc47906c784ca7ecefbda172be535dce SHA-256: 1635f006fa47c30383a45e4c092f4dead6789fe1a5f76c652206e0035960ebb4
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://baarspo.ru/wix?keyword=download+ultimate+backup+pro+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fc75cf340898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482625/normal_5fcff617d2582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454545/normal_601683a358532.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/fotepopunaj/83450189658.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/81239552842.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/toxicwap._com_series.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/vce_exam_simulator_crack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/marketing_and_communication_strategy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/41001312553.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/70731571134.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/luxizu.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/badri_audio_songs_free_naa_songs.pdfIn PDF document text
    • http://duwomew.rf.gd/mapefukuvevaripozusudene.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/55931363314.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/bmat_section_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/aggressive_angiomyxoma_a_rare_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/how_many_days_in_a_week_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/laid_in_america_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/45963658056.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_off0000ccd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD1 5336 bytes
SHA-256: 36df8f861ccaaf84eac1c7c1dd9d52caa07910b50f50a1d4df2010d86509ba56
font_01_sfnt_off0000def8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF8 14584 bytes
SHA-256: 0a85cefd4c366dd95d413d6fb63552de16d2bb50914475d6d4bc7dac0f7b6bf7