Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f979234672ab23c…

MALICIOUS

PDF

88.0 KB Created: 2021-03-15 10:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e04fa26df419eb12f042dfb9f6669ba1 SHA-1: 50e4e6c696f96c4d82a6ca4530007fbf1b2cd44e SHA-256: 0f979234672ab23c7e0373722e2c741ec1338f707b3daff27fde5c7ad1b0e73f
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://dafemum.ru/wix?keyword=como+evoluir+rockruff+pixelmon'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is a high-priority indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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.
  • 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://dafemum.ru/wix?keyword=como+evoluir+rockruff+pixelmon In PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_60089b8b12cd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_602ee4b3a7372.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/igjgggL/60901009217.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/EihiKhb/miraculous_ladybug_costume_party_city.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/XMVjiJf/the_pass_colors_lyrics_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/ninuxoti/Pjjiijh/mizegomokoxepod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366959/normal_5fe097e5ac10a.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/hehaijg/origami_butterfly_instructions_dollar_bill.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471959/normal_5ffbc8efe8d9b.pdfIn PDF document text
    • https://cdn.sqhk.co/fifenije/6O4gejh/noticias_telemundo_52_de_hoy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_6042cdc00e6f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494436/normal_604d663e012a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_601b184002197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480728/normal_5fe79de40e2b7.pdfIn PDF document text
    • https://cdn.sqhk.co/buxoxurobewi/r7hiJ94/7583854291.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/PjiDie4/49814167012.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/rjdHvjg/telescoping_pressure_washer_wand_lowes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/bamarovunasibadotufemu.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/xevekobekuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/blind_date_2015_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/7028126700.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/causes_of_social_anxiety.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28D 5292 bytes
SHA-256: 4fd33250d58ab2ed832d8213e00c28f7c7670ad84c1afc6fb8f45194bbd02fa3
font_01_sfnt_off00010542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10542 4872 bytes
SHA-256: 8ef5c19bf7285ed1f39a6dfed46450c7d412c31a78cb8c031d28c39a4b4527eb
font_02_sfnt_off000115c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115C3 6720 bytes
SHA-256: 9438264c5b1dd32976ee141899a7009bd3034a73d98f8fcdc308b969c1296687
font_03_sfnt_off000127cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127CB 12688 bytes
SHA-256: 7cb4b7b192c96e6e555b523ac711d9503d685bb52f98c1cf9bc51aba901b203d

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