Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bb371044b1685a…

MALICIOUS

PDF

71.1 KB Created: 2021-02-11 14:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8c05b1c4b2ed49e81d70c8f1b5dcf067 SHA-1: d07ce73a7a729b588c0403980a2f77f31f200ea4 SHA-256: 56bb371044b1685a591110d4405533f81ade8e8ee36f118f247764db85dcd227
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://jottigo.ru/wix?keyword=horizontal+wall+mounted+baby+changing+table PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412394/normal_5fcb3377bc605.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460944/normal_5ff5781220528.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374957/normal_5ff29d73132fd.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/H15ggeu/lizotuk.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/jBeheje/hit_songs_of_marvin_gaye.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491451/normal_5fc6ae44ee66a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_60218cedd2b78.pdfIn PDF document text
    • https://cdn.sqhk.co/radojiga/LJWgd0c/introduction_to_business_grade_10_textbook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_60134d3bb12b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5ffac90c306df.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/satedafadusizo/canadian_visa_application_form_online_for_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/97633111496.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/guitar_chords_to_sheet_music_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/capstone_research_project_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/bible_study_topics_for_young_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/medidoxisezexasagefonaba.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_off0000d5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B9 5520 bytes
SHA-256: 73df7515ddea7fd29f8039506b311e2da7ba0936ea6846821bf5898b34b89c8a
font_01_sfnt_off0000e86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86E 10932 bytes
SHA-256: c00c0ae29e0b4854e7664f9227f6d90c279c3f34930c2fe2effcff875f8915a9