Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f148d0094041e2a…

MALICIOUS

PDF

67.4 KB Created: 2021-02-16 06:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 99c2aab35eafd20a2ac198324e2c2a60 SHA-1: 6d5e9dae212b2dfd4e9d6ef830b60998d39c33f8 SHA-256: 1f148d0094041e2ac50117dac800c0cdc2d676d8e4796e72cdab1273fbfdaada
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://leonvi.ru/123?utm_term=is+diesel+fuel+a+class+3+flammable+liquid PDF link annotation
    • http://subonus.ru/chiari_type_1_malformation_treatment72r6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411500/normal_601092a566ef7.pdfIn PDF document text
    • http://detonicufficiale.website/19745490210xoubd.pdfIn PDF document text
    • http://eglo.club/bsava_formulary_20204es12.pdfIn PDF document text
    • http://kexisugotiro.22web.org/arkansas_state_police_crash_reports_online.pdfIn PDF document text
    • http://boomua.site/ralokevegalatakotewesv5eo.pdfIn PDF document text
    • http://fulusixavopowem.iblogger.org/sap_wily_introscope_10._1_installation_guide.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/lixisariwulo/conjunction_worksheets_for_class_4_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/falexakew.pdfIn PDF document text
    • http://titarejidawe.epizy.com/android_16_17_18_dragon_ball_z.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/list_of_prefixes_and_suffixes.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/tixatovitifoverop.pdfIn PDF document text
    • http://jilovin.epizy.com/veseji.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/showbox_alternative_android_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/best_theme_app_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_off0000cbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD7 5440 bytes
SHA-256: 4b8ea28a273b319f9c7859e891e9b36bf034636667ff1bf6fd13a39f034cbbaa
font_01_sfnt_off0000de45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE45 10032 bytes
SHA-256: 2ed8c5ecf765f753d68e6d0042c658236668474cc09b2c6aea393bf5f7348396