Malicious PDF — malware analysis report

Static analysis result for SHA-256 732d94ad337b5dd7…

MALICIOUS

PDF

68.5 KB Created: 2021-03-01 00:06:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 157725a11abeb9fa308802cb816a97da SHA-1: cba309620499de251f96bc208e52a0541a776b56 SHA-256: 732d94ad337b5dd7c82ef67c1d658a1ed74f84ffc27626da168b3a3a0ce63e15
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=intermediate%20microeconomics%20and%20its%20application%20pdf PDF link annotation
    • http://nasty666.space/competing_visions_a_history_of_californiaz1x06.pdfIn PDF document text
    • http://fejekadiwoxobiz.getenjoyment.net/what_the_meaning_of_admission_rate.pdfIn PDF document text
    • http://avit0.pro/777_book8u836.pdfIn PDF document text
    • https://cdn.sqhk.co/fefuxumito/f6agdVX/man_down_rihanna_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/xafigozenusu/ZgjmBo0/shark_ion_robot_r87_vs_roomba.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/xeruraxexi.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/gumuturuniwuwunad.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/is_the_four_agreements_a_christian_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5fd76f76ec2eb.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/djjhhgd/lilowumeg.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/71702642304.pdfIn PDF document text
    • https://cdn.sqhk.co/vefoveted/kD5w2hc/lomowenixazefolu.pdfIn PDF document text
    • http://peuly.xyz/830041328748stku.pdfIn PDF document text
    • http://groshyk.site/nopoxebavupurofanodlrweh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sisufovofow.atwebpages.com/17875409931.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_off0000d286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD286 5236 bytes
SHA-256: 6e9faeeb1efb56d8ded5841dbf390af900fb7aa2b94cd75a73d9b39fd299a382
font_01_sfnt_off0000e43b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43B 9616 bytes
SHA-256: 8fd73de42ac7e0f9113dfb56438ff1d3ac75164e83b49aee5a384eeb1b56c387