Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a51f032ac669bb9…

MALICIOUS

PDF

71.1 KB Created: 2021-01-22 06:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f627b9916be587f3d644dd9710dcb1b3 SHA-1: 2d79c69f327f67342d048043b283a891f32b622a SHA-256: 9a51f032ac669bb905a999477a98097788292b18c9078d735560196c80b3bee5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL, https://jacksth.ru/wb?keyword=kizi%20100%20games%20unblocked, is likely used to redirect the user to a malicious site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=kizi%20100%20games%20unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406777/normal_5ffd61a3bd330.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404723/normal_5fc8b17b6f10c.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/cbhg9wv/paximopawivefib.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/YadidbU/buvoxesonutudetavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404122/normal_5fcf3fc105f32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423430/normal_5ff2b11ab69c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458826/normal_5fe1b91d3b6f6.pdfIn PDF document text
    • http://terubib.22web.org/20618271939.pdfIn PDF document text
    • https://cdn.sqhk.co/wivenute/egdhx4d/swing_state_polls_biden_trump.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/sonutopexaramuf/zejozofagigigolexenovovos.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/72472931895.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/sport_news_website_templates_bootstrap.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/formal_dress_hire_melbourne.pdfIn PDF document text
    • http://ketaxesam.epizy.com/election_2019_date_list.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/b_m_sharma_mechanics_1.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/sbi_debit_card_apply_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/apps_lock_screen_apk.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_off0000d97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97A 5580 bytes
SHA-256: 75a604b0901db0ac2c3b88b709ab51398f3e4a035edcf707264832e513f8188a
font_01_sfnt_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 10308 bytes
SHA-256: 62ea7d4888ff63e41f8299b4ad575cd9fcb737debffa1763c92e5bf193a06c18

Open this report in the interactive analyzer, or submit your own file for analysis.