Malicious PDF — malware analysis report

Static analysis result for SHA-256 50bcc93ec060dc7b…

MALICIOUS

PDF

73.4 KB Created: 2021-03-02 06:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 63d2fef8c875c682ce7f83dfcf9a3aaa SHA-1: 971a8c2cbcedad001a33f073ec89ee663f283254 SHA-256: 50bcc93ec060dc7b925a10867a819cffe10a29f639f9daadf272c6530ebab0b2
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://midufefew.ru/award?keyword=family+therapy+interview+questions PDF link annotation
    • http://rijexofugovu.medianewsonline.com/what_is_chase_bank_address_for_wire_transfer.pdfIn PDF document text
    • https://cdn.sqhk.co/riteximeras/jWO5WCy/minecraft_dark_forest_seed_1._14.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/zilotisos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495838/normal_6008012bc7a74.pdfIn PDF document text
    • http://bokifov.iblogger.org/bloc_de_notas_windows_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rowazazapa/jdgjrie/masiba.pdfIn PDF document text
    • http://paksorond.xyz/durukaredujo0bwc.pdfIn PDF document text
    • http://kihepc.xyz/learn_south_american_spanish_freexgeaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_602c6f75eaee3.pdfIn PDF document text
    • http://sarkife.site/disorderly_conduct_charge_nyx93x6.pdfIn PDF document text
    • https://cdn.sqhk.co/dilobowuz/kZr8fhg/zidigimabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416153/normal_60164bfd681da.pdfIn PDF document text
    • https://cdn.sqhk.co/jorisuzil/txojdgc/hku_portal_change_pin.pdfIn PDF document text
    • http://opensoda.pro/869217788519qsoc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465018/normal_5fe1700bdcb28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_6026e4e035e46.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxolavomuzo.myartsonline.com/do_my_parents_drink_too_much.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/21089430380.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_off0000e297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE297 5392 bytes
SHA-256: 40d8545b05a611f3b6edf57af648e0976fa9a7cafbda3c9669e67402bb9ef91a
font_01_sfnt_off0000f4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E3 10440 bytes
SHA-256: f080d9c6301b1304299c24d8ce63ef77bef96df0eecfef7f4497f45ea59ac3ee