Malicious PDF — malware analysis report

Static analysis result for SHA-256 5804b9537883fc83…

MALICIOUS

PDF

67.9 KB Created: 2021-01-21 16:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: eb3a498a79d98833dee6329fb1e442e3 SHA-1: 0f8feb047f05a70095fe4b77eb1895e3d4528f2d SHA-256: 5804b9537883fc83e08443baa3f9b62d660191773557460d1b2b4499e8ca5495
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://traffnew.ru/wb?keyword=skull%20pancake%20maker%20target PDF link annotation
    • https://site-1171591.mozfiles.com/files/1171591/23321302991.pdfIn PDF document text
    • https://site-1168059.mozfiles.com/files/1168059/gepekoj.pdfIn PDF document text
    • https://site-1187178.mozfiles.com/files/1187178/miriam_truman_capote.pdfIn PDF document text
    • https://site-1171887.mozfiles.com/files/1171887/ship_sim_2019_ovilex_download.pdfIn PDF document text
    • https://site-1175166.mozfiles.com/files/1175166/amazon_kindle_store_lending_library.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/47299790771.pdfIn PDF document text
    • https://site-1255093.mozfiles.com/files/1255093/bhajanavali_malayalam.pdfIn PDF document text
    • https://site-1176856.mozfiles.com/files/1176856/labyrinth_castle_rock_co.pdfIn PDF document text
    • https://cdn.sqhk.co/poxufape/gijhPgc/73625777754.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zetamox.epizy.com/oneplus_file_manager_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/conduction_heat_transfer_poulikakos.pdfIn PDF document text
    • http://zepedijuva.epizy.com/bacula_configuration_guide.pdfIn PDF document text
    • http://duvexarido.epizy.com/inventors_and_inventions_list.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/dead_by_daylight_xbox_digital.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/fatiwavonaretegix.pdfIn PDF document text
    • http://diwuzenebixo.epizy.com/business_english_vocabulary_in_use_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/cpma_study_guide_2017.pdfIn PDF document text
    • http://sevuvev.epizy.com/tutobadisi.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_off0000cd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD89 5244 bytes
SHA-256: d1cad187a27f8ca3057dded2b5e6267dbd50a5e2f9e6e4a614f877d066729c95
font_01_sfnt_off0000df51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF51 10380 bytes
SHA-256: 10c91bde9ad1166402fcdbecbc9312e7bd78e49797aa6715ee12f70be1d2bb9a