Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0f9d7f7ade6197…

MALICIOUS

PDF

72.0 KB Created: 2021-02-12 11:25:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3999bd4dc1e768821047afc27b69173 SHA-1: 17cd502eb96ee439f7d7b25581f720eaf4b5bdb2 SHA-256: 6d0f9d7f7ade6197f42160827ec7915f23f164785b13958e9a6b146a6d9d122f
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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=chapter+2+cumulative+review+geometry+answers PDF link annotation
    • https://cdn.sqhk.co/befozaxulot/bqhticb/32894959952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451757/normal_5ff9fe496a763.pdfIn PDF document text
    • https://cdn.sqhk.co/siwebove/ijijOwL/rilogisixijifom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fe3373c10160.pdfIn PDF document text
    • https://cdn.sqhk.co/milagaleja/iiimtii/pass_exam_with_flying_colours_ne_demek.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/asiiCkK/square_painting_ideas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409420/normal_5ffd1de4a76d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472783/normal_5fc67363750c7.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/jd6ACKp/33133931071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467975/normal_5fdc748f7137d.pdfIn PDF document text
    • http://maroron.22web.org/overtime_payment_request_format.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5fe1535703dac.pdfIn PDF document text
    • https://cdn.sqhk.co/narobalof/0jSjQT7/greatest_hits_98._1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496193/normal_5fc6d4d2eaff5.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/ijkdghn/best_paranormal_romance_book_series_for_adults.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kovusilo.epizy.com/bonsai_cuidados_basicos.pdfIn PDF document text
    • http://pevivudawof.epizy.com/7354885833.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_off0000cf17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF17 5640 bytes
SHA-256: d98d90996d44236dd4cc33b12066c3ae9678362589cf302d9639fa0b021ad56a
font_01_sfnt_off0000e234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE234 15544 bytes
SHA-256: 3aabad31d59dd9e1ce315846843fbc91bebbf02127b9aea621d33bde73bd85ec

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