Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec2f8da19cbe02d…

MALICIOUS

PDF

69.5 KB Created: 2021-02-15 22:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 309edda488a03607788e4dd8d4bb17b6 SHA-1: 1a01e3397d2251c56a4c1c87f5fb6e78267010a1 SHA-256: 3ec2f8da19cbe02d45dc601d1d7453270f5be90f31491c4e8beda3e88c92e4f0
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/123?utm_term=properties+of+rational+exponents+examples PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5ffe2c56ce8ab.pdfIn PDF document text
    • https://cdn.sqhk.co/mabisurud/jjLig2S/vadipererituzuje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_601726cc0716f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5fffe861626b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5fdd69bf8d65b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413456/normal_5fda6c38b38a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490961/normal_5ff450e18eadc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zarevarepi.epizy.com/hello_neighbor_achievement_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/pojolanalawiwufase.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/xiaomi_mijia_360_camera_english_manual.pdfIn PDF document text
    • http://desakoda.rf.gd/gagem.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/zujikowaposesopivijuxew.pdfIn PDF document text
    • http://beluruke.epizy.com/tumultus_2_question_answers.pdfIn PDF document text
    • http://selifesupenikiv.epizy.com/gathering_dreams_income_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/op._gg_lux_guide.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_off0000d1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DF 5116 bytes
SHA-256: a719937308108f28f0c7f4076fb4a01ca72404c84c4609d04fdcd4aec6eae37f
font_01_sfnt_off0000e337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE337 10860 bytes
SHA-256: 2afb31ae6dbc2c1e546251b8f1363895037ee248d1db25c0c59c8bffd88eebe4