Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a4e80a91a3e2e7…

MALICIOUS

PDF

74.8 KB Created: 2021-02-08 08:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 195b06d18a182de8801af8e5b9efe048 SHA-1: 13988054dc52346909f0114202056b5941d64ea8 SHA-256: 50a4e80a91a3e2e72c264ef773a01b8c327642afc3603b13b3343deb3af9fd77
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/wb?keyword=funny%20brain%20teasers%20questions%20with%20answers PDF link annotation
    • http://cmb-societe.com/bitilavipepoxalufubowsitz.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/jdYgdgd/mominufisavej.pdfIn PDF document text
    • http://salestore.pro/1490321185l629t.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/bR02jc0/descargar_williams_pinball_classics_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xijisejes/idigjhd/wovax.pdfIn PDF document text
    • http://usacreditscore.info/xibifovupumobamugelk0.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/xygecnu/38718416108.pdfIn PDF document text
    • http://abzac.me/961736682712xk3x.pdfIn PDF document text
    • http://creamwalls.online/37118637679wgfnm.pdfIn PDF document text
    • http://hookup666.site/677718149979mfqs.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/jdf6Zhh/duwabejasowizaveb.pdfIn PDF document text
    • http://carishr.com/red_ball_level_66ctow5.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/gy3jejg/puwuvasovimubored.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/google_translate_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/kilejefibafogolepatexepak.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/angular_templateurl_inline.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/74505076832.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/titantv_free_local_television_guide_program.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_off0000e863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE863 5156 bytes
SHA-256: 84d66db4776def2e9b246c784b1400ab9e983d06174a53778ff0f5158b24bfe9
font_01_sfnt_off0000fa04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA04 10680 bytes
SHA-256: af52cf88e8fedc7f787626f4fc72f61c210cd86f1fe21ea8cd2e6bd673656ebf