Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10eb06dfa5fe022…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 07:03:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b162bdbaed16c07069b4aeab81495a9d SHA-1: 61e8d71891642ea639cb7df62e822d01359531ee SHA-256: a10eb06dfa5fe0220b98543cb9b933defe3fd77a4886c5aa5c0bbf924d38cd77
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jacksth.ru/123?utm_term=how+to+find+a+trust+lawyer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462059/normal_601028aa3e09f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_601e486bcac99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451932/normal_5fe34fe9f0995.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff9a6f553c4c.pdfIn PDF document text
    • https://cdn.sqhk.co/dojatejij/d7hgWif/real_robot_ring_fighting_2018_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_602855d88a548.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laposul.rf.gd/sokekakuzor.pdfIn PDF document text
    • http://botemexake.rf.gd/82775250695.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/cortana_for_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/ipcc_2014_climate_change_synthesis_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/mathswatch_ratio_homework_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/malformaciones_congenitas_cardiacas_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/laripu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/chart_of_accounts_template_word.pdfIn PDF document text
    • http://gitogopafo.epizy.com/yahoo_mail_philippines_free.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_off0000db15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB15 5056 bytes
SHA-256: a821c1aebb924efe3abfa5d480e2a8974c6cf44f834908766fe4082d9ec325c0
font_01_sfnt_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 11252 bytes
SHA-256: 11777cb7fe6c6924b019f4a2749d2a4f1037bdfd32123444bcbf6cc07ba728ab