Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2044fc9b35a59ee…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 00:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 33dafc9076baafc9580d44e320b040a4 SHA-1: 29798c08b6bb8754a5225a4d88ae0e8ce77d9042 SHA-256: f2044fc9b35a59eecd46a7cc637563d5fa20e75782764b35a24ccf4536c9f37b
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://maypoin.ru/wb?keyword=all%20my%20sons%20moving%20and%20storage%20corporate%20office PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461505/normal_5fc7cb9b671b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449004/normal_600b91f5efb2f.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/CSMhhwi/art_of_war_game_troop_ranking.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzewekafan/jpUXgiT/running_fred_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5ff97f81d677d.pdfIn PDF document text
    • https://cdn.sqhk.co/gejemizus/b8Df1hg/ripusutudupivimilewodi.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/b20xjjV/mevekusinukumusumavopitax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_601ebf92e30ab.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/hgHNovC/legendary_z_warriors_game_download.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/jazofi/butadojenafe.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/cash_flow_template_excel_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/misironofumasowawazoreve.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/55760275011.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/lebos.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/counting_numbers_1-_20_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/15221556579.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/dork_diaries_book_15.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/beps_action_plan_8-_10.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_off0000deff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFF 5628 bytes
SHA-256: 900130887456d6f1b8e67575193e120dc875de015a6660e7b68c32e1b6dbbcc0
font_01_sfnt_off0000f228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 10416 bytes
SHA-256: 08f201af42b3a10f92c33518a014c807a9a5f7936d8781650092d5eabeb1091b