Malicious PDF — malware analysis report

Static analysis result for SHA-256 8289133561a2818b…

MALICIOUS

PDF

72.9 KB Created: 2021-02-13 10:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 129294c95cc56282bfdc0f9b3fbcf29f SHA-1: 9b5b8935851c6aa647d0e750e0da5bf042e02491 SHA-256: 8289133561a2818b6618b950e43b1a68e0ca12c1578c4618ba051cd7b9bac4e6
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=american+horizons+volume+2+ebook In PDF document text
    • http://smilex.club/pufabisuhfvqd.pdfIn PDF document text
    • http://edayafar.xyz/pacify_her_lyrics_cleanedlo8.pdfIn PDF document text
    • http://demepujabad.22web.org/velevexuwamuzisebax.pdfIn PDF document text
    • http://newyearshop.site/11134368322hbbin.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/86139484696otmxx.pdfIn PDF document text
    • http://amin-ukraine.net/zubopesivabulilxdva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_6026c4f7d49c6.pdfIn PDF document text
    • http://hugertely.xyz/pesukugurekexidimrg68q.pdfIn PDF document text
    • http://sweetygirl.club/chori_chori_movie_song_mr_jatt86ncv.pdfIn PDF document text
    • http://agent-ritual495.online/frozen_cartoon_songs_download_mp3s8c2c.pdfIn PDF document text
    • http://ellmax-site.xyz/zumujeregitemobokanz8tiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497346/normal_5fcc527369d52.pdfIn PDF document text
    • http://lovelyhouse.online/ejercicios_de_prefijos_y_sufijosmhnzn.pdfIn PDF document text
    • http://moekolechko.icu/22391923653xbp28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fexotupakel.rf.gd/78377337681.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_off0000d91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91C 5476 bytes
SHA-256: 030bf7ac563ad5b24403583527e929e5c601d6a8e098e7cdf395cd70fdfd5ff8
font_01_sfnt_off0000eb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9E 13424 bytes
SHA-256: a1c2cfc9784734514073807b5e4e36cc22a822794d8d79ef4fe93a1ebe6fd659