Malicious PDF — malware analysis report

Static analysis result for SHA-256 032777f6d49106e2…

MALICIOUS

PDF

94.9 KB Created: 2021-02-13 06:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 09ce84a96689f3d8baa1019a48f6c34f SHA-1: ec89c60eae5d3f68f6df96de74340c4d006e0b5c SHA-256: 032777f6d49106e2546c964bcb98bed7c157b9ed449564eb78b5501b893dda81
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/wb?keyword=begin%20again%202013%20soundtrack'. This indicates the document's primary purpose is to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wb?keyword=begin%20again%202013%20soundtrack In PDF document text
    • https://cdn.sqhk.co/ludukuni/agjkWhh/deus_ex_mankind_divided_golem_city.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/hecighb/spirit_animals_book_series_in_order.pdfIn PDF document text
    • http://spain50off.info/boogie_man_blues_violin_1_sheet_musicii0zd.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumirapeb/KqSvhcH/grass_cutting_jobs_dublin.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/9PjaFjc/loopback_ip_address_means.pdfIn PDF document text
    • http://steelsho1.club/liderazgo_daniel_goleman6cne6.pdfIn PDF document text
    • http://lenudes.com/3872872676888ty8.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/jbhdZfJ/xovoxakaned.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/jSjcqUC/alita_battle_angel_2_release_date_imdb.pdfIn PDF document text
    • http://centerbluebadge.com/81868366072aa527.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/tigjjh7/restaurant_story_appliance_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tizowodifi/skilled_occupation_list_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/12931873195.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/75466144525.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/befaloj.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/butterknife_android_compiler.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/besopuliziwel.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/project_timeline_template_excel_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/metformin_er_1000_cost.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A70 3120 bytes
SHA-256: a6f841a436d9058f7afd927fb013522bdf00d3b8caba92eac94af016f564a6a1
font_01_sfnt_off000125ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AC 5560 bytes
SHA-256: 414821c829ec4aa944ffeba2d5b57fe4b27ed2c0616bf0f2824dc3db6b456bd9
font_02_sfnt_off000138a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138A2 11408 bytes
SHA-256: 2acb893b5cde50d55ffd49ce9ba9f1bbc1c08292013a4f643ac5a2175f042b15
font_03_sfnt_off00015f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F63 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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