Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba8f2dd214995f7…

MALICIOUS

PDF

67.0 KB Created: 2021-02-27 00:21:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2616167f61415acda6d5ea6dd3d690e1 SHA-1: 7414f7c5127a1613378c84793f200466b8d0190e SHA-256: 8ba8f2dd214995f7c4c673b8c584d4e873a98a6c0e3762a9399d82f7b09c4ec0
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://ponafet.ru/award?keyword=can+mitral+stenosis+cause+left+heart+failure PDF link annotation
    • https://cdn.sqhk.co/mulepava/ghhgeSL/78886444496.pdfIn PDF document text
    • http://trixy-matrix.space/849763745120qaxi.pdfIn PDF document text
    • http://istlan.space/wetuzowmgw.pdfIn PDF document text
    • http://rubeatyshop.xyz/72874050605uabg1.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/52527044903.pdfIn PDF document text
    • http://menugejonara.22web.org/browsec_premium_mod_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/hfgdjOM/kemaput.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/5317f2d591367.pdfIn PDF document text
    • http://betmoy54.com/jigakuxuxiwolalxsb2f.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/zogarowufadixijimakiv.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/paulo_coelho_the_archer_quotes.pdfIn PDF document text
    • http://creditpm.com/how_to_put_reusable_filter_in_keurig_mini_plus2xsy0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefezaw.rf.gd/kufebavuxunifab.pdfIn PDF document text
    • http://kagapoxarizi.rf.gd/88254781961.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_off0000cbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBEB 5024 bytes
SHA-256: 5d2efd8cf4a8ac6d44b0507b04a6c0e1924925f533edaa2ce2b3ca0ce263f671
font_01_sfnt_off0000dcd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD0 9992 bytes
SHA-256: a43aa9adc71041435cc0bad166815965607e6f40b2313b959b3cbc70a6cb2585