Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f0151ffea1c8bc…

MALICIOUS

PDF

67.5 KB Created: 2021-02-16 04:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a6353a2eedb05b1d8ec03bc9213d51bd SHA-1: 42a1cb58ee3dfdc6316ca3696e67891026a20d72 SHA-256: 68f0151ffea1c8bcc5eaae17e6bd1c417371dbc8467d58945c1c4b29273dd2e6
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://leonvi.ru/wix?keyword=bill+nye+heat+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494663/normal_5fe8e68329e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463298/normal_600dc6a630de2.pdfIn PDF document text
    • https://zakuxaposud.weebly.com/uploads/1/3/1/3/131382531/1129131.pdfIn PDF document text
    • http://zugawumaz.22web.org/aetna_better_health_of_pennsylvania_provider_manual.pdfIn PDF document text
    • https://sikezenubotimer.weebly.com/uploads/1/3/0/7/130739875/bobuzakokukagarum.pdfIn PDF document text
    • http://kugufenabigidef.iblogger.org/angular_binding_in_template.pdfIn PDF document text
    • https://zabosete.weebly.com/uploads/1/3/1/1/131164473/porawopaguva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501514/normal_5fd8608b1bd01.pdfIn PDF document text
    • https://feveronibamuja.weebly.com/uploads/1/3/5/3/135300243/635848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_5fd217e7bf027.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojobawezelo.rf.gd/96926618596.pdfIn PDF document text
    • http://rigirulame.epizy.com/educational_printable_worksheets_for_4_year_olds.pdfIn PDF document text
    • http://wereguvepowu.epizy.com/ics_astrology_software_for_pc_free.pdfIn PDF document text
    • http://gifimedirawi.epizy.com/85237649635.pdfIn PDF document text
    • http://jakowufa.epizy.com/t_shirt_logo_mockup_free.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/96063607655.pdfIn PDF document text
    • http://jedigox.epizy.com/cursed_minecraft_texture_pack_mcpe.pdfIn PDF document text
    • http://muvusibose.rf.gd/barsega_sawan_song_pk.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_off0000cc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4E 5080 bytes
SHA-256: 81a7b87b62fed437cc084437f111f1bb497c92ab20189cb8fe5bd1a763eb68c3
font_01_sfnt_off0000dda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA7 10268 bytes
SHA-256: c8beabe389c1f851cb28fa9367519df03379ecbfbc63919cd371cdbe1acf8707