Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f095ea22888ee7…

MALICIOUS

PDF

73.3 KB Created: 2021-02-16 10:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 71dacd8c79501d513f47247c46342803 SHA-1: 35c143ce29921c7e535f1caac6db2722140ed733 SHA-256: 57f095ea22888ee73af88c8309af304e65334f6a66a1db401f9704f96d9f2755
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=cartomancy%20multiple%20card%20meanings PDF link annotation
    • http://merutakozuxonu.22web.org/never_back_down_movie_hd_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369927/normal_5fc6a8e15071b.pdfIn PDF document text
    • http://interbank.link/zidinukodemedurefuxiu66q6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ffc186fe49e8.pdfIn PDF document text
    • http://afracheat3.xyz/gexisezaki840mg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_6010d48e652cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465402/normal_5fefc7ef8df41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478669/normal_60066fa4c8ff7.pdfIn PDF document text
    • http://trikotoria.ru/54354502931ytxfi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463005/normal_5fd0f23bd4ed2.pdfIn PDF document text
    • http://afterdealer.pro/slay_the_spire_ironclad_ascension_20_guidegogzl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jepelevewo.epizy.com/tijivatata.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/consolidated_balance_sheet_definition_business.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/46630945964.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/beyonce_braids_formation_tour.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_off0000e03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03E 5400 bytes
SHA-256: 70bfffb85a3f4146a82cd5022e7d582e7927e96ca930f6b493ca1c7d5eec92b2
font_01_sfnt_off0000f28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28A 11136 bytes
SHA-256: 8a32d21d26b8bb097f119ebdcffd2bffa274d836bc34369ec004b737d380e5fa