Malicious PDF — malware analysis report

Static analysis result for SHA-256 d082a6a861e50b1f…

MALICIOUS

PDF

71.5 KB Created: 2021-03-02 17:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 766eb23db78719293ede62ed26572cc4 SHA-1: 79b0522c57a29cb3b6dd5978b4c7de76343e0079 SHA-256: d082a6a861e50b1f2022682a79805e47454926319697606b44db79ef70af5f57
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/award?keyword=descartes+meditations+summary+2 PDF link annotation
    • https://cdn.sqhk.co/nakusunegud/fXXjajs/78112540780.pdfIn PDF document text
    • http://energierecrute-emplois.com/58854391621diklz.pdfIn PDF document text
    • http://wubegewefek.iblogger.org/aprendizajes_clave_curso_en_linea_ingresar.pdfIn PDF document text
    • http://bitjoms.xyz/why_is_my_first_alert_smoke_detector_chirpingap6kp.pdfIn PDF document text
    • https://zelowomuguzak.weebly.com/uploads/1/3/1/3/131379017/468376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445564/normal_5fed922962747.pdfIn PDF document text
    • https://cdn.sqhk.co/papowepu/heZNj0K/tap_the_frog_full_version_apk.pdfIn PDF document text
    • http://betmoy54.com/cutover_plan_sample5krpm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_602888f85c1ac.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/gdr9rOC/mojawodixixovaposum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446497/normal_60052a6a8acde.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fovuxux.rf.gd/17579985675.pdfIn PDF document text
    • http://gugujis.epizy.com/australian_healthy_food_guide_portion_size.pdfIn PDF document text
    • http://wexuboguke.epizy.com/vidmate_for_pc_old_version.pdfIn PDF document text
    • http://mujeburesi.epizy.com/sizepuxajopi.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_off0000db26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB26 5288 bytes
SHA-256: 1533759dafc9ad86f003f39e815ad13ad53a609b67b0be635fc7c6d8049e836c
font_01_sfnt_off0000ed18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED18 10632 bytes
SHA-256: e7677a05839e85502188ddb2d85b61cb7cb5ec85b2315523ab0580b2e3f0df16