Malicious PDF — malware analysis report

Static analysis result for SHA-256 633c45ae6a803169…

MALICIOUS

PDF

79.0 KB Created: 2021-02-16 17:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cb8fd244350a817590ea8bb712fdf64e SHA-1: f18d7f639e8343d3aa0bec77808c2b2e7b5c1127 SHA-256: 633c45ae6a8031698564ba2a41edd1bbcd707085393af6d93e42e543f252d01e
134 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=big+green+egg+grill+xl+price PDF link annotation
    • http://smartradiobf.ru/dawofa4asyy.pdfIn PDF document text
    • https://zavurebugefogoj.weebly.com/uploads/1/3/4/3/134397626/4086959.pdfIn PDF document text
    • http://jotupati.22web.org/how_to_use_icloud_email_on_android.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/ijhjFje/translate_b_inggris.pdfIn PDF document text
    • http://bobatukuxoto.iblogger.org/emission_factor_database_ipcc_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/iCqjgdD/mastercraft_x2_wakesurf_setup.pdfIn PDF document text
    • http://top-odejda.com/90197089486x9h6l.pdfIn PDF document text
    • http://techanomic.com/fubunakexatasod9xhl.pdfIn PDF document text
    • http://shoppermarket.online/manual_de_usuario_dodge_stratus_20067t3h1.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/fjanjdH/1794530710.pdfIn PDF document text
    • http://submonster.xyz/dutavapudujapideyx4md.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/1018026.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/c27d5e5d21b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xawisis.rf.gd/social_media_platforms_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/26777917582.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_off0000f769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF769 4832 bytes
SHA-256: 19fb209b6a595e89f4ff3b1cc591d8c11d6831570b60591cefb6055b33abdc8f
font_01_sfnt_off000107f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F7 11576 bytes
SHA-256: 81720f2f5a50c0ae80b91cd7f95706a7fc9a94d72f55293f9396997dd4242af7