Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a94d79579ec5d99…

MALICIOUS

PDF

79.8 KB Created: 2021-02-14 03:17:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1ab44ea4f756bc3efb38729178a489b0 SHA-1: 08283e6a4ed6391e8766cec545df62e850f29c89 SHA-256: 1a94d79579ec5d990c0355e099be56b237c79703bf5dbb6b6849039a1aae4415
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=super+mario+128+tech+demo PDF link annotation
    • http://sajezexutumesu.iblogger.org/68816913465.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/iflhchi/download_spin_the_battle_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455642/normal_600d4c74bfc73.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/6ihDfii/52456369705.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384634/normal_5fcd731a17391.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/554281.pdfIn PDF document text
    • https://gorasugaki.weebly.com/uploads/1/3/4/7/134766712/kufegewotujo-fevubenusedetaz-xukixov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5fd0e17fd9489.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/biiphjn/disney_emoji_blitz_calendar_october_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_5fd6f6d7829c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408719/normal_5febc741dadce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391001/normal_6005038fc8b7c.pdfIn PDF document text
    • https://lodobapidadisu.weebly.com/uploads/1/3/1/1/131164557/norajezofene.pdfIn PDF document text
    • http://ruwegekugite.22web.org/35360265130.pdfIn PDF document text
    • https://xesinuvukuwufo.weebly.com/uploads/1/3/0/7/130776104/6195039.pdfIn PDF document text
    • https://naluzakagowu.weebly.com/uploads/1/3/1/4/131411806/loxawewitadovezakut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_5fe6eaead2c11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fikikozazilut.rf.gd/creed_11_songs.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_off0000fb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0B 5584 bytes
SHA-256: 5cb4a688333792641ab3c8682c89e06b4236611896fd4967e7354f70ac34b2e4
font_01_sfnt_off00010dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDE 11044 bytes
SHA-256: abc458de1267e5dc44629da99e3514f446a2a99927b971afadc67bd285a743e0