Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea97caf4b9dd4a41…

MALICIOUS

PDF

66.6 KB Created: 2021-02-24 22:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 028c4675d9618656c88015d0b6f43b1c SHA-1: 1e0375e7bb5f425c821879063a5929e529ad6da2 SHA-256: ea97caf4b9dd4a410dbe4a4bd47e3dbaea3a7b188318f1663f0bf67dd532e7d0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://maypoin.ru/award?keyword=algebra+lineal+grossman+septima+edicion+pdf PDF link annotation
    • https://petenugilamabo.weebly.com/uploads/1/3/1/4/131453278/9fd2c.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/zwhdmg1/beta_merge_battle_simulator_weapons_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/jabezoxujo/ibhdkgg/77248181982.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/takug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447447/normal_60000a506743c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485309/normal_601d98385d205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386330/normal_60183adc1ea44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497093/normal_6006660e6d08e.pdfIn PDF document text
    • https://cdn.sqhk.co/daboxazile/gi3PjgY/84494310246.pdfIn PDF document text
    • http://shoop-fr.ru/deferred_tax_computation_balance_sheet_approachqoscb.pdfIn PDF document text
    • https://bevereka.weebly.com/uploads/1/3/0/7/130739533/451956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_60306e7219338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_6033244314b1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468294/normal_602afa472114f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobawukesilebaf.epizy.com/interesting_books_to_read_about_life.pdfIn PDF document text
    • http://silapopo.epizy.com/dead_frontier_2_skill_guide.pdfIn PDF document text
    • http://vuxonisozezuxov.rf.gd/lapetavu.pdfIn PDF document text
    • http://ruxofepugoloma.rf.gd/36092655802.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_off0000c715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC715 5604 bytes
SHA-256: 1b3813cd863029fcb00f2fbde8c98373b26c4b95e9440a0376f8b51822846e89
font_01_sfnt_off0000da11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA11 10224 bytes
SHA-256: 8e7faec48960825d8271d1d9573fdd660b699df0b928298c48730291d19e3f39