Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88d32814f419ce9…

MALICIOUS

PDF

74.5 KB Created: 2021-02-19 23:46:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5a31d96218cc68f16798da85bc42fc0a SHA-1: 105f500ea05a60a4022f79b000f68de19bb7673d SHA-256: d88d32814f419ce9f95782fba4173badda12b4ad1464c4487af7f782420281c7
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://jottigo.ru/wix?keyword=gaming+pc+storage+hdd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408996/normal_601e5a2120703.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/l6Ghbgc/lamitegulubil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5ffa94e37d785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485165/normal_601dcd1c25d66.pdfIn PDF document text
    • http://bititoxoguxal.22web.org/28592440104.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/dighaje/fukado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_60257899be9c9.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/ejaXhe2/9795045396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500878/normal_5fda1da074c61.pdfIn PDF document text
    • http://bettermoneytips.com/9851296460nh9kz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474462/normal_6023e8e9d51b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478950/normal_5ffde5a8d7168.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/BjbAjcy/synology_photo_samsung_smart_tv.pdfIn PDF document text
    • http://wersita.fun/linear_equation_function_definition_mathuquyc.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/gfHz4ge/52669658316.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 5484 bytes
SHA-256: 8c269285f77c496795ff7072764e11677fd14d0e144caecf9de28028e296bca8
font_01_sfnt_off0000f913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF913 10656 bytes
SHA-256: b0544458a2aa8453bfe73d2eb2efa477efaeb138cc4e1800e05f8f491a52ed56