Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c57e681fab37a7…

MALICIOUS

PDF

64.2 KB Created: 2021-02-19 22:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9cb96be2277d3190cef80ecc838c5198 SHA-1: 7f1fbcd64d3e457334e156ca55b77b6f537f74e0 SHA-256: 65c57e681fab37a758744553cbcf9b85eebd5499f26da26a7cf8659e4a55b653
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=dynamics+newton%2527s+2nd+law+worksheet+answers In PDF document text
    • http://zisesir.22web.org/1874528479.pdfIn PDF document text
    • http://sosiwuro.iblogger.org/papa_s_burgeria_apk_free_for_android.pdfIn PDF document text
    • http://raffle.website/67699494730b07b0.pdfIn PDF document text
    • http://vovality.club/71942861551okeb.pdfIn PDF document text
    • https://fexaxotira.weebly.com/uploads/1/3/5/4/135401388/1174252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485826/normal_5fc7bcc3b96f6.pdfIn PDF document text
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/190929.pdfIn PDF document text
    • https://cdn.sqhk.co/panuwatosim/jKwWkFA/gun_mod_for_minecraft_pe_ios.pdfIn PDF document text
    • https://wabaxudazisivi.weebly.com/uploads/1/3/3/9/133986682/5678286.pdfIn PDF document text
    • http://ehaberdevlet.com/mac_os_sierra_iso_image_free_downloadrjjk0.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/0c535d99ce1.pdfIn PDF document text
    • http://ijmalan.xyz/2929842707x7mk3.pdfIn PDF document text
    • http://winoraama.website/crayon_epoxy_game_onlinedligz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mevusajilitum.rf.gd/minecraft_skin_packs.pdfIn PDF document text
    • http://diwesetudu.epizy.com/84654669440.pdfIn PDF document text
    • http://sodanone.rf.gd/gotham_bold_italic_free_font.pdfIn PDF document text
    • http://jipokogave.epizy.com/minecraft_map_editor_apk.pdfIn PDF document text
    • http://desavoz.epizy.com/aqa_gcse_examiner_report_2018.pdfIn PDF document text
    • http://sakigekoxigukil.epizy.com/rafisolabowolafel.pdfIn PDF document text
    • http://pegowalinasaduk.rf.gd/30390287460.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_off0000bd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD71 5600 bytes
SHA-256: cde364d0f6c9d8b4b14b970ac2afe545682bb53017534eda157905d609897129
font_01_sfnt_off0000d077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD077 10248 bytes
SHA-256: 0668fc99a2502cb30d4c746df961585c134d433fcc045ea80986ea7b3125f7d6