Malicious PDF — malware analysis report

Static analysis result for SHA-256 1321636284b1b70d…

MALICIOUS

PDF

84.1 KB Created: 2021-01-25 17:57:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6cdd6dbf5c0cb67fc3f827a7d3929d1a SHA-1: e193af7da8f27585fd2876dbb043cf2694624a2a SHA-256: 1321636284b1b70d19b6f00fb780613f13b1e8e5f79ba37dcf455bb75270ed22
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/wb?keyword=zombieland%20double%20tap%20cast%20salary PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376878/normal_5fc68689d7b70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_5fd1e421cb76b.pdfIn PDF document text
    • http://espaceclient-cmb.com/pro_car_simulator_2020_xbox_one0ryj3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5fe0d25d223c2.pdfIn PDF document text
    • http://ukranews.icu/leadership_skills_training_for_high_school_students6juc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427528/normal_6009fdd1b2376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483072/normal_6000d11f86256.pdfIn PDF document text
    • http://ohota-ribalka.online/livelf18oo.pdfIn PDF document text
    • http://vitalia-transports.com/sikufawenirepelanat7a7a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417986/normal_5fda4b3d141d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386618/normal_5fe3fe7689b67.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/gofiguj/modifiers_adjectives_and_adverbs_worksheets.pdfIn PDF document text
    • http://biwovake.rf.gd/grouped_frequency_distribution_worksheet.pdfIn PDF document text
    • http://veluvuwipigunuw.rf.gd/bematool_bematech_2100.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/asuran_movie_songs_in_tamilrockers.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_off00010a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8F 5420 bytes
SHA-256: a612840ec9456a3405730a9750cb99ac6356a8ff7336e83d12524b5da66886ba
font_01_sfnt_off00011ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE4 11272 bytes
SHA-256: ab4474dc1ad9cf7a81dcb4f2ea06ffcf8f2b9b5ea0e52b3dfff7632487f44852