Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd1572eeca70b7f…

MALICIOUS

PDF

76.2 KB Created: 2021-02-26 23:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9caf784aa3ba4fb6ccb3fa735f39efd1 SHA-1: 43325b4a608e3413869416c39ee11e37de6ce679 SHA-256: 7fd1572eeca70b7f8f188083907732e9f2ffe88e93b25ec79c1a6ac9a4067b04
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://resalured.ru/award?keyword=how+to+put+in+britax+car+seat+base PDF link annotation
    • https://wofiwajelakezod.weebly.com/uploads/1/3/6/0/136092853/56d623.pdfIn PDF document text
    • http://ilkertr.shop/digitech_jamman_express_xt_stereo_looperqx2rf.pdfIn PDF document text
    • https://jorazejub.weebly.com/uploads/1/3/2/6/132695428/tulumemi-rotuluta.pdfIn PDF document text
    • https://cdn.sqhk.co/dorodidur/kHjeal2/7409954732.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/calidad_de_vida_en_el_trabajo_libroap2hi.pdfIn PDF document text
    • http://nukakerosezopep.22web.org/moderate_sedation_guidelines_asa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450337/normal_5ff1048cd7d55.pdfIn PDF document text
    • http://shmelev.pro/sony_vegas_audio_event_fx_download6hgrb.pdfIn PDF document text
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/4373919.pdfIn PDF document text
    • https://nerapusu.weebly.com/uploads/1/3/1/4/131438180/jozot.pdfIn PDF document text
    • https://bazulerijodinib.weebly.com/uploads/1/3/1/8/131856415/9847867.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/0hgLmhb/creative_destruction_hack_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/ijbgegc/xidinurusofirusopetamij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuzipewas.rf.gd/monthly_budget_template_excel_2007.pdfIn PDF document text
    • http://xigesema.epizy.com/fipekubolusikedaxomonon.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_off0000eeb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB3 5156 bytes
SHA-256: b1839eaa862b6419c98b4afd7ab283a2c2699bf8f6207193a942b917af366e57
font_01_sfnt_off00010058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10058 10412 bytes
SHA-256: 26e98e7d9a88f3692a85df4771313c697cf8cf49894e48547b14445d3e84eb5b