Malicious PDF — malware analysis report

Static analysis result for SHA-256 972c11469d973986…

MALICIOUS

PDF

65.1 KB Created: 2021-02-11 18:15:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6a2ceabb049612cfd785af1c07926a30 SHA-1: 85bea5b7c2cf30b77d7273bd7db8afeea4a16a4d SHA-256: 972c11469d973986d5b51ffa05d7f0ffc3913f9ebe4f886caee26cbfa9f2bece
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wix?keyword=linear+relations+and+functions+worksheet In PDF document text
    • http://vwwv-avito.online/ropafopazozizag0rvx.pdfIn PDF document text
    • https://cdn.sqhk.co/zorezikuluz/dAD8hf3/zombie_hunter_shooter_survival_mod_apk.pdfIn PDF document text
    • http://kamaz-ftc.com/patowijurigazoripedoxu3fn6x.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/head_soccer_champions_league_2019-_20dukgc.pdfIn PDF document text
    • https://cdn.sqhk.co/lilodipu/gihf1CU/international_day_of_the_girl_child_quotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486035/normal_5fd88646e30e3.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/989VMZH/156_seconds_to_grab_free_stuff.pdfIn PDF document text
    • https://cdn.sqhk.co/mudifuto/djhCDgi/amc_qbank_login.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/ib32iiJ/road_accident_definition_uk.pdfIn PDF document text
    • http://trellos.fun/culturally_responsive_teaching_and_ti7nl8.pdfIn PDF document text
    • https://tapuroxoj.weebly.com/uploads/1/3/4/5/134599682/7a7de3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/affirmative_action_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/zowijarinem.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/tagowemidajabuzajetuv.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/texto_informativo_breve_sobre_los_delfines.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_off0000c2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D9 5208 bytes
SHA-256: 19f295cad332ef586b774ce28dd8153a34cb43bdde28486f97a9bbb81fd8de07
font_01_sfnt_off0000d4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A3 10240 bytes
SHA-256: d043efb8ba73ea63d7d205240c31255f1d8212b66c0b915d6be33184efd8b62b