Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c84efad5982d060…

MALICIOUS

PDF

75.8 KB Created: 2021-02-14 04:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c8402916d37d06257b1c4d9b8d8d5bdf SHA-1: 41f03ca30e4de0a952d6d346a3964358e6bb73b4 SHA-256: 9c84efad5982d060b5ce04498a0acfd252aeef7b5314f6627bceb2e653ec2698
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://jottigo.ru/wb?keyword=college%20board%20sat%20book%202019%20pdf PDF link annotation
    • http://raffle.website/brothers_movie_ringtone_pagalworldr0v95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384647/normal_5ff52e7d2ced8.pdfIn PDF document text
    • https://sojagifuwolu.weebly.com/uploads/1/3/4/6/134689160/womoxinasu_wawuneg_lusexorofi_zurul.pdfIn PDF document text
    • http://bubble1.space/fimi_italia_certificazioni_e_classificheimf502q.pdfIn PDF document text
    • http://starkrobotics.org/43330995727xb3b.pdfIn PDF document text
    • http://tells.fun/36400719393kqk8j.pdfIn PDF document text
    • http://prequester.online/mamovefubilegem6zw8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384655/normal_6005acbe8e3a5.pdfIn PDF document text
    • https://bopexetijajab.weebly.com/uploads/1/3/1/4/131411078/9793602.pdfIn PDF document text
    • http://lovelyhouse.online/9090214265le3ov.pdfIn PDF document text
    • http://helplnstagramoffice.com/data_analysis_google_sheets8dihz.pdfIn PDF document text
    • http://blacktea.space/audition_la_la_land_pianouz9vw.pdfIn PDF document text
    • http://copyright-security-ig.com/analysing_school_performance_secure_accessepcx8.pdfIn PDF document text
    • https://monemoret.weebly.com/uploads/1/3/4/6/134667898/xaromo.pdfIn PDF document text
    • http://good-production9.site/wunaraperaretikifd3e0s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475741/normal_6001206dae1b9.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/palevijuj/14692571092.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/7008137455.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_off0000ead7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD7 5800 bytes
SHA-256: 3992aa9e2e437a2fd450e111a2eb7ffc48ac0079f617e2330caeb7ffa22f4932
font_01_sfnt_off0000fe9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9E 10488 bytes
SHA-256: 0bd9adab98f0ee75ef9462326af9b98e21afc7a7d97b4f990f34b3a83c9158c0