Malicious PDF — malware analysis report

Static analysis result for SHA-256 d733e6ce4393e3f0…

MALICIOUS

PDF

83.0 KB Created: 2021-01-19 04:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 918781554eb474e2096f0127d715137c SHA-1: 475b0ab991b5df816edc6d515c5f2ba816615596 SHA-256: d733e6ce4393e3f04ec6fe0b2d44feb6b012206345f883835a1554f7cf589822
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/123?utm_term=force+and+motion+study+guide+pdf PDF link annotation
    • http://depupejaxidolip.22web.org/22331240774.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/997b4808957d55.pdfIn PDF document text
    • https://sivubatololux.weebly.com/uploads/1/3/4/8/134850937/4190269.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/hfgdg80/national_geographic_clothing_shop_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/gotoruzud/hhbzhij/bengali_to_english_convert_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/Gchhcif/castle_siege_fantasy_battles.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/jiiinia/zozez.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/ghSjbeg/puppy_wallpaper_4k_hd_download_for_android_mobile.pdfIn PDF document text
    • https://sinipipa.weebly.com/uploads/1/3/0/8/130874509/jebulofenopo-kuxirotuj-nenejokoveron-mowatiwodegeme.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/ibieZie/24178070896.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/TihISjf/76324088872.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gadudadu.rf.gd/87199258202.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/62591108602.pdfIn PDF document text
    • http://wemiwapava.epizy.com/wefunopal.pdfIn PDF document text
    • http://biborufa.epizy.com/29950651281.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_off0001057b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057B 5500 bytes
SHA-256: 322a97aa69f0ab398f43cbbbb0ff6120b8f9791d0d99bf24038a715668c90c5a
font_01_sfnt_off0001182a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1182A 11576 bytes
SHA-256: 47b88d0f3ad22d6066bffeeba6339c960b64dadd49eb438d5cec6dc5f3d43b04