Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d7890304f19cf7…

MALICIOUS

PDF

73.1 KB Created: 2021-02-24 17:26:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b8ececa03d40f157a574ef6c52f9808 SHA-1: 8591e8983b5219c0f78ce9353f11122cfbb1a507 SHA-256: a5d7890304f19cf7142565bd12bb20257b6acd388229d020dfe72953f94fcee4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=download+asphalt+8+apksum PDF link annotation
    • http://rakotaravimi.22web.org/descargar_caballo_de_troya_8_gratis.pdfIn PDF document text
    • https://bagawilikazukir.weebly.com/uploads/1/3/1/0/131070307/boxulavuzozoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481397/normal_601b8da69ec3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_601fab0f28cbf.pdfIn PDF document text
    • https://jubewujug.weebly.com/uploads/1/3/4/6/134653216/6637664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_60145de80c790.pdfIn PDF document text
    • https://fugakesuj.weebly.com/uploads/1/3/0/7/130776648/voriwozivufonulux.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/1HjbjhJ/visit_florida_commercial_song.pdfIn PDF document text
    • https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/f6522677.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/sojofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://numebazo.rf.gd/kavakepixaludovalaxu.pdfIn PDF document text
    • http://piwazazizalo.epizy.com/beginner_somewhere_over_the_rainbow_violin_sheet_music.pdfIn PDF document text
    • http://mepoketefetur.rf.gd/tisapak.pdfIn PDF document text
    • http://lilexod.epizy.com/49886885845.pdfIn PDF document text
    • http://biborufa.epizy.com/burmester_911_mk2_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DC 5176 bytes
SHA-256: 1a913846857931017683272a0c23ca0c41219c213be4a3042ebe02f8c309d262
font_01_sfnt_off0000e3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E2 5452 bytes
SHA-256: 85ada21db67adb52540daa6963d4d0c1a2beada9d8758cdaaa4f81af3be6ea34
font_02_sfnt_off0000f664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF664 9608 bytes
SHA-256: 01ca187f9bfff88e0070310402ceba4a84d05d0996752334d263cfdb566990be