Malicious PDF — malware analysis report

Static analysis result for SHA-256 5881cafb22577425…

MALICIOUS

PDF

66.1 KB Created: 2021-02-19 12:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ea233d17ccf80a27ffac5bbce33332f0 SHA-1: a20a20b1117369b15b9f1e4230d170974e67b1e3 SHA-256: 5881cafb22577425ef1cb979f0f228f4add86cb3b6658d3385a086494eb9e349
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://jacksth.ru/123?utm_term=craftsman+speed+start+mini+tiller PDF link annotation
    • https://nupuwuzom.weebly.com/uploads/1/3/1/4/131438231/tivefumususupoji.pdfIn PDF document text
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/7548099.pdfIn PDF document text
    • http://xojopimo.22web.org/53307575198.pdfIn PDF document text
    • https://cdn.sqhk.co/bewiviki/ghZiDha/followers_and_likes_tracker_for_instagram_apk.pdfIn PDF document text
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/dcfef1.pdfIn PDF document text
    • http://jofarofuwudeveb.66ghz.com/lagu_its_you_ali_gatie_mp4.pdfIn PDF document text
    • http://jigatinapa.22web.org/62911287303.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375894/normal_5fe2447a79078.pdfIn PDF document text
    • https://dosisusibifoba.weebly.com/uploads/1/3/4/2/134236234/busexinofeke.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/NhahiYr/sajodedilewudadisiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tajegigug.epizy.com/lajovimusepufagipa.pdfIn PDF document text
    • http://bamasagure.epizy.com/lalizojaj.pdfIn PDF document text
    • http://fugewad.rf.gd/cyber_discovery_answers_2019_challenge_11.pdfIn PDF document text
    • http://lojuwuwa.rf.gd/json_formatter_plugin_firefox.pdfIn PDF document text
    • http://segalufosirinep.epizy.com/tilumuza.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_off0000c795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC795 5092 bytes
SHA-256: ccd2b3d5367360f13df8af05224e027ca6f6d57c8c4f9b014974db5c50d0931b
font_01_sfnt_off0000d8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CB 10144 bytes
SHA-256: 3cca092ef4851890b7357a6a68d104e4fc487f15f6488875dde52718cef2633e