Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0508c0b9f82250…

MALICIOUS

PDF

69.0 KB Created: 2021-02-26 06:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5d4c35df55032a99d73f1c3c5e6b2300 SHA-1: b7ab44702b9213d90049858d9dedd6bc0914908e SHA-256: 2d0508c0b9f82250244a60c51f1a4cd21a4681de14dc4eb2fccf4f8829943466
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://druttle.ru/award?keyword=kenmore+gas+stove+parts+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411919/normal_5ff1b2063e5d8.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/pggiftX/19582215077.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/vetamedisoz/interview_questions_and_answers_for_office_assistant.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/73449670686.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/lesson_7.1_skills_practice_unequal_equals_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/10955851634.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/bleach_brave_souls_android_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/gapiduvemakug.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/67977711267.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/personal_allowances_worksheet_child_tax_credit.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/xuguwefimasapobonido.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_off0000d2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 5168 bytes
SHA-256: c54e5e339f5766d46d436f15e0534df865b3cd3060b584fe1e47f4be0d3bf01e
font_01_sfnt_off0000e46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46A 10288 bytes
SHA-256: adad98e450c975e2223d1ce1a444f86dcac1ff689b4a52371f72cb70929f55e4

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