Malicious PDF — malware analysis report

Static analysis result for SHA-256 02490be78bcd9310…

MALICIOUS

PDF

66.4 KB Created: 2021-02-15 22:29:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 77cc8a682dd9feffd878ba36cd972ac0 SHA-1: 11b0f86e03c4ce28fa901bc0357fc133be4dcef7 SHA-256: 02490be78bcd9310f06560d2dba8b1ce455af78a09a5db0e4d38edb85075f2aa
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/wix?keyword=pokemon+mystery+dungeon+randomizer In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490125/normal_5fc86cc6b70cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fd8e881d7d9b.pdfIn PDF document text
    • http://cosmeteca.com/jobumumagamume6pq6k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383702/normal_5ff47269c92f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380219/normal_5feda31e5e97a.pdfIn PDF document text
    • http://uablog.site/exerccios_resolvidos_de_analise_combinatriavmvve.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/wiggchd/kojomuzamibadipotus.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/jxhdkGJ/matriz_de_analisis_dafo.pdfIn PDF document text
    • http://zurabutodiriwa.22web.org/product_data_sheet_template.pdfIn PDF document text
    • http://ductsunlimitedins.com/household_expense_spreadsheetillqp.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxesojogugu/hfxkrhd/zombie_run_2020.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/dstv_tv_guide_sport.pdfIn PDF document text
    • https://cdn.sqhk.co/boxumiza/0SJhaUY/tabata_7_minute_workout_rocky.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424997/normal_5fcc61b81745d.pdfIn PDF document text
    • http://yarrebitteh.online/classic_rock_usa_radio_stations6l5vi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuwuxubemepimox.rf.gd/free_printable_custom_calendar_templates.pdfIn PDF document text
    • http://nadedeve.rf.gd/b._sc_nursing_online_application_form_2019.pdfIn PDF document text
    • http://kujujigufa.epizy.com/jodututojop.pdfIn PDF document text
    • http://xekifoxudiduvaf.rf.gd/91354030806.pdfIn PDF document text
    • http://wunozoviwo.epizy.com/pimiranadirodozenagid.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_off0000c7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DB 5328 bytes
SHA-256: c41f4c1f27f0a8bfac1bc1d3ee0525dc808ac909285ddd99bddbcfe0fcfc10ed
font_01_sfnt_off0000d9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F8 10128 bytes
SHA-256: cc48c43850dac9f7283b56e09fd76d196d56e30f46155ddf224f1c5e78bd37f2