Malicious PDF — malware analysis report

Static analysis result for SHA-256 494e71bffd1bc71e…

MALICIOUS

PDF

71.8 KB Created: 2021-02-12 11:52:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 958c39323099a3ae5c99a09e3a18d868 SHA-1: dc2862b9ef4ae5fc611586e2d885327f900e3887 SHA-256: 494e71bffd1bc71ed63516c8fe33e14c9d5a8f58dec33dec974e97f3fe30d91e
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://jacksth.ru/wix?keyword=where+and+were+worksheet PDF link annotation
    • http://zvezdasevera.online/falda_andina_sinonimoq1vvp.pdfIn PDF document text
    • http://strapslap.online/lejizokamovovujufazapeghydv5.pdfIn PDF document text
    • https://xaredoluvowa.weebly.com/uploads/1/3/1/8/131871785/aac155.pdfIn PDF document text
    • http://netewe9.xyz/residential_building_inspector_study_guideqovnx.pdfIn PDF document text
    • http://agentsoft.space/tidudikewukaxovupefiwixi6sb66.pdfIn PDF document text
    • https://niwanuve.weebly.com/uploads/1/3/1/4/131406473/sexovigibovibolug.pdfIn PDF document text
    • https://dosijusesuxola.weebly.com/uploads/1/3/4/3/134305349/68c15cdc.pdfIn PDF document text
    • http://kipivejezijab.iblogger.org/iso_9001_certification_procedure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fdad51388939.pdfIn PDF document text
    • https://tugunopoxakisif.weebly.com/uploads/1/3/1/3/131398472/vezowel-zotamosovi-gafivasuxoga.pdfIn PDF document text
    • https://kololeranazi.weebly.com/uploads/1/3/4/5/134583506/tebawuvasirekes.pdfIn PDF document text
    • http://preplafond.xyz/bacaan_al_quran_dan_terjemahan_indonesiad0qqg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dunoxoxuri.epizy.com/big_sean_songs_2019.pdfIn PDF document text
    • http://natexekazedap.epizy.com/jimovidi.pdfIn PDF document text
    • http://sokozujetabil.rf.gd/71319578403.pdfIn PDF document text
    • http://kozafulide.rf.gd/mozilla_firefox_52_offline_installer.pdfIn PDF document text
    • http://pajamubo.rf.gd/average_android_developer_salary_uk.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_off0000de28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE28 5048 bytes
SHA-256: 381ce15957e2062bc1aac98a099e54d1a5b9d17ba6e13b88dd37ee7a14ae5208
font_01_sfnt_off0000ef66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF66 10276 bytes
SHA-256: ef8fb6b1b546597d41f56f2ecda2a0417ff8184130228256ea52d5e8c0662c46