Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ce724aceaf6e83…

MALICIOUS

PDF

73.1 KB Created: 2021-02-04 01:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: d66172bbc51eaddabb0e21358181656d SHA-1: f1c85160b9974d1141a69224c0507c40cb283a77 SHA-256: 16ce724aceaf6e83fc4596bbf9e70e3fecb5fc966d2996a844c3e92e9a39e350
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vedefagam.weebly.com/uploads/1/3/0/8/130814874/wafoza-pusosarapo-kupupelawu-naguxi.pdf.
  • 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://seumenha.ru/123?utm_term=bullet+force+hacked+account PDF link annotation
    • https://vedefagam.weebly.com/uploads/1/3/0/8/130814874/wafoza-pusosarapo-kupupelawu-naguxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388173/normal_5ff80dd1d1225.pdfIn PDF document text
    • http://fanuvowebutil.22web.org/97786260491.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_600fb9ed246af.pdfIn PDF document text
    • http://copyright-help-center.com/assembly_line_definition_us_historyilit2.pdfIn PDF document text
    • http://greyfruit.space/52102640327vje15.pdfIn PDF document text
    • http://justamorem.com/temesonekor29f2.pdfIn PDF document text
    • http://lnstagramcentre.net/stylish_girl_make_me_gorgeous_mod_apk_downloadubu1j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipumupanaw.rf.gd/piano_sheet_music_easy_popular_songs_free.pdfIn PDF document text
    • http://xovimed.rf.gd/tuladunukomowubibaluromuj.pdfIn PDF document text
    • http://femodizabofowu.epizy.com/peridevalefawudekutavaweg.pdfIn PDF document text
    • http://zilokujidetomo.epizy.com/gejisizirerepafiziwa.pdfIn PDF document text
    • http://bokakemipik.epizy.com/nenoxetarenezirolinojobi.pdfIn PDF document text
    • http://takerowul.epizy.com/74830006061.pdfIn PDF document text
    • http://ribezewipuzez.epizy.com/adobe_reader_software_for_windows_10.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_off0000e218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE218 5044 bytes
SHA-256: 075612ead43838fd84ed46e41aec8b0d8109a5dae526e3026ef87d408c6bb9ad
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 10704 bytes
SHA-256: bd1ec116459fe61b5f041a7fbe2b1ed60d4d2b472e067d4b76ee1fa8ef233114