Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f5b114b696fa03…

MALICIOUS

PDF

70.2 KB Created: 2021-02-13 02:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9c97e499321c8029f1f50a3aa5d2fca7 SHA-1: af306932c2f6fdcbdd3a7991c64d1d9fe31d6ed3 SHA-256: c3f5b114b696fa0326643f70ac79b8b3c63acdbf68678ee1655a2fa605662f04
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/wb?keyword=free%20printable%20extended%20family%20tree%20template PDF link annotation
    • https://rojanebe.weebly.com/uploads/1/3/1/6/131637229/2081a5b93e7.pdfIn PDF document text
    • http://vk-settings-change.online/58077131917d2wfv.pdfIn PDF document text
    • http://moneyindia.site/how_to_download_sky_factory_1s0ha1.pdfIn PDF document text
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/ce8527a2.pdfIn PDF document text
    • https://wibipujesotut.weebly.com/uploads/1/3/1/3/131398272/kemofiremuzuma.pdfIn PDF document text
    • https://pupazugosabi.weebly.com/uploads/1/3/4/8/134868946/695412.pdfIn PDF document text
    • http://custits.space/lezanixevagirowakoruwotxjxkt.pdfIn PDF document text
    • http://netewe9.xyz/boris_and_the_dark_survival_apk_androidanw95.pdfIn PDF document text
    • http://vipadminler.org/cysa_study_guide7kvjk.pdfIn PDF document text
    • http://center-san.ru/gabidopemolte5c.pdfIn PDF document text
    • http://reduslimitalia.site/google_sheets_gantt_chart_tutorialdseci.pdfIn PDF document text
    • http://titoto.xyz/antagonist_and_agonist_musclesl48jm.pdfIn PDF document text
    • https://tolawururajetam.weebly.com/uploads/1/3/4/8/134883146/vavasa.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/1202606.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gapivegek/kiwekukatomemitipete.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_off0000d6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 5276 bytes
SHA-256: 58ee5dee8af29c0727582abe6e72f2ebf3a371ab855ba89b52d2d7a2fa07687c
font_01_sfnt_off0000e89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89E 10248 bytes
SHA-256: f18a8dc47cbd7da0c3f8dbb23617d633e59b5cbd2ad36074805cff36817525e7