Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c62bafe4d8c7bc…

MALICIOUS

PDF

63.9 KB Created: 2021-02-24 08:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3a9d78f73dac9090b21a373774b9027f SHA-1: cd2300e3ca12af8864d069f05c518a1269919999 SHA-256: 76c62bafe4d8c7bc16c57f34e45b0aa3aa7a50fbdd7819ce010f04b2f9bbb6a1
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://crophysi.ru/wix?keyword=tomasita+elementary+school+albuquerque+nm In PDF document text
    • http://biomanix.best/transgender_top_surgery_female_to_male9nhbw.pdfIn PDF document text
    • http://mobevusujezuno.22web.org/30534209280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fd06ffcf0ef2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420028/normal_5fed4a1307106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_603369cee000d.pdfIn PDF document text
    • http://fapenas.22web.org/problem_solving_sample_questions_answers.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/83367608567xra3y.pdfIn PDF document text
    • http://shmelev.pro/three_kingdoms_massive_war_hack_apk_download09yk6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423699/normal_5ff4c48c4e020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_6010cb896cea0.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/zoromexemuzid/b_e_d_application_form_2019_rajasthan.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/birthday_background_video.pdfIn PDF document text
    • http://manepiri.epizy.com/73644782736.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/12549583285.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_off0000bdf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF2 5356 bytes
SHA-256: 6c04a90722544ef61fe468068642cbda6b116b31a163a680d42662aad77711a6
font_01_sfnt_off0000d000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD000 10220 bytes
SHA-256: 0b510bfb64775da299ae4f73e9125f96b9ce0f121a50fa2f22b264c1ae675ba5