Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e22a1fd86cef27…

MALICIOUS

PDF

72.0 KB Created: 2021-01-20 22:39:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f6a3616220e75dd34d19542a6b71bc5a SHA-1: d2746540ff3c5d84ba5374eb6ce8be939cd7b288 SHA-256: 88e22a1fd86cef278b6b473d23f48bf9ab19819c55cb5275ca3c08215479909c
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://maypoin.ru/aws?utm_term=game+apache+air+assault+pc PDF link annotation
    • http://mebesovinu.22web.org/11005839991.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/ihMhijW/19578421578.pdfIn PDF document text
    • https://site-1168247.mozfiles.com/files/1168247/ulearn_cerner_care.pdfIn PDF document text
    • http://maroron.22web.org/modeneroj.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/EjgHMif/super_stickman_golf_1_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460461/normal_5fa8e696d5739.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5ff65d2e0fef2.pdfIn PDF document text
    • https://cdn.sqhk.co/movumatoz/QibyjMg/75513907928.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/V52Khhf/10914455216.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/PjjOMia/translate_app_logo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404976/normal_5fde2ff517987.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/ha7ifHH/jolaziwefefutoxajiruwava.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sipariwemarisu.rf.gd/d_d_3._5_sorcerer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/initiative_competency_questions_answers.pdfIn PDF document text
    • http://pebulibupa.rf.gd/92417403351.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_off0000dcaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAA 5204 bytes
SHA-256: 3762ffaf66cdf06fe045ad5f58e0f7a91dd8d0c3edce0230773a5e86b24566d8
font_01_sfnt_off0000ee30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE30 10816 bytes
SHA-256: f4d91c9fb3dd323553879c3b43972b07f2698acb1eb5861cb376d0d670484ed7