Malicious PDF — malware analysis report

Static analysis result for SHA-256 671b64c58026ce7c…

MALICIOUS

PDF

72.7 KB Created: 2021-02-08 11:35:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 10979d4fbdeb37aa2d0cc3c94b29188b SHA-1: c764fc4d97612dd612eac4291a0704b83a217e4b SHA-256: 671b64c58026ce7ce3153afb9c068c33debf9191dfa3c92dd26b2aa289c4937b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/aws?utm_term=responsive+css+grid+template PDF link annotation
    • http://cashbackmoney.info/catch_and_kill_free9teen.pdfIn PDF document text
    • http://reduslimitaly-official.website/open_outlook_template_macro8zg5w.pdfIn PDF document text
    • https://burojexadolej.weebly.com/uploads/1/3/4/1/134108553/2a24b8ea.pdfIn PDF document text
    • https://cdn.sqhk.co/rujamuzizogo/ghzA0kJ/faraway_2_jungle_escape_level_19.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/x7uApha/pou_egg_hack_download_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481403/normal_5fefdfd7cf2cb.pdfIn PDF document text
    • https://dabesego.weebly.com/uploads/1/3/2/7/132740865/vurevoretexever-mutelanedo-wolerepi.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/igPigk4/xipediwuvixofitaziru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376878/normal_5fca188108507.pdfIn PDF document text
    • https://kidubaviputotej.weebly.com/uploads/1/3/4/5/134520398/begemukus.pdfIn PDF document text
    • http://mnogoturov.com/missing_punctuation_worksheets_ks3iyggl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369305/normal_6002e3f2a5c74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/simujix/black_holes_wallpaper_android.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/project_management_timeline_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/61015560815.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_off0000dc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5D 5460 bytes
SHA-256: 9c713d76a4449160e843f6f21e914abfed3b432b2f7a8b8129de155973888a10
font_01_sfnt_off0000eee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE4 11636 bytes
SHA-256: 7940e1b6d44500293480b40edf5e346e3d136f6801177c47dd60e2d10d6706eb