Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fb9f316aebbe6d…

MALICIOUS

PDF

79.1 KB Created: 2021-03-12 03:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ce7023f9f1fb7656dafd277e7572f345 SHA-1: a6dcd0a003ccd4a6ee94baef701b90f2e43f391e SHA-256: 76fb9f316aebbe6d18ae4c2c5be0454d353b08b9b05991bab115873e9f4165e3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous embedded URLs, with a primary suspicious URL being 'https://resalured.ru/wix?keyword=the+options+playbook+pdf+free'. The presence of many links on disposable hosting suggests a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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/wix?keyword=the+options+playbook+pdf+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497081/normal_6039d0051cdcc.pdfIn PDF document text
    • http://filozajerezabi.getenjoyment.net/93808140839.pdfIn PDF document text
    • http://depusapo.mypressonline.com/how_to_translate_arabic_to_english.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410418/normal_5fcf483094bab.pdfIn PDF document text
    • https://mudepazenanaj.weebly.com/uploads/1/3/4/7/134765609/306b16765556c6.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/lulizofinipipev.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/yo_amo_a_paquita_gallego_capitulo_144.pdfIn PDF document text
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/buwefotex_gepav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_5fe826a22c147.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387921/normal_5fe07ed3789e2.pdfIn PDF document text
    • http://lenulari.mypressonline.com/84400556820.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/fixetogokuwoninutop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460723/normal_600f167c59a0c.pdfIn PDF document text
    • http://lunamawel.22web.org/verithanam_bigil_song_masstamilan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368964/normal_5ff9acce36621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379032/normal_5fcd1e9a7e0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5fd24f59629db.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/vovedunobigisera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_60108612a5348.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naxesabefadufu.atwebpages.com/weloza.pdfIn PDF document text
    • http://nevegeb.rf.gd/76380239442.pdfIn PDF document text
    • http://kimawawasero.onlinewebshop.net/how_to_setup_dvr_for_remote_viewing_ddns.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_off0000f711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF711 5384 bytes
SHA-256: f56159cb564483458374e9e40435844edab989be8f7b7b50714d4b5c0ca05d5c
font_01_sfnt_off00010958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10958 11052 bytes
SHA-256: e8e3e32eae0adb6685e491f42a82294fb911a6949449378c782e3775e73734bb

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