Malicious PDF — malware analysis report

Static analysis result for SHA-256 3583161fd58a7cfe…

MALICIOUS

PDF

72.2 KB Created: 2021-02-14 20:08:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a726fc49942d5a55dac69bf659fa574a SHA-1: bd6f8f568365543cea1dff3e64b061322498a51d SHA-256: 3583161fd58a7cfe979f022e26f4776186b26b80cde5e05b8575e038b1b226f3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/123?utm_term=get+ripped+fast+diet In PDF document text
    • https://jedadizonavo.weebly.com/uploads/1/3/4/7/134721040/rotasikajul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_5ff0eb053ad0d.pdfIn PDF document text
    • https://lemirupuzomive.weebly.com/uploads/1/3/2/8/132814022/ce6037a809eb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483337/normal_6008d7afbd123.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/xeseruguwililoruk.pdfIn PDF document text
    • http://bio-ita.fun/luzokijiroet7vl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_5fd2548641df7.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/ijgafwK/posizopuv.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/igY9hbY/zigutukukanewan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478438/normal_5fde5b6baaa80.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kusegipe.epizy.com/wokewiguzuzipagepew.pdfIn PDF document text
    • http://somizifiwij.epizy.com/zofipozilagixurajidasijup.pdfIn PDF document text
    • http://medetoti.epizy.com/heroes_of_the_storm_maps_guide.pdfIn PDF document text
    • http://putazosaw.epizy.com/drivers_test_florida_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/fidowojag.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_off0000dd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD96 5036 bytes
SHA-256: 67f8c9d53da3088476b9b8ec975b218f5e35098038c91b7d0d7b263e4dbab9d9
font_01_sfnt_off0000eec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC5 10928 bytes
SHA-256: 718c90acc8b80b7001e7f21339ae4e0d38598a68970cc6cb3eb01799fe3a8c06