Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf2580712216e93…

MALICIOUS

PDF

75.0 KB Created: 2021-03-15 08:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6d32af55c5027b62aba6ac6c8e29d8a3 SHA-1: 18d58d6ebbcd4492c913eacf7fa8a990b48e27bb SHA-256: 8cf2580712216e93f10e26c4d8b561753f144491470c80ff329e547395b8e91a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristic 'SE_BROWSER_INSTALL_LURE' suggests the document's content is designed to trick users into installing malicious browser components. The embedded URL points to a domain associated with search engine result pages, likely a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=beyond+training+pdf+download PDF link annotation
    • https://cdn.sqhk.co/wezufunin/xAk8jaP/samsung_internet_browser_download_location.pdfIn PDF document text
    • https://cdn.sqhk.co/pemiduwegam/bwtRieb/anti-_aircraft_definition_example.pdfIn PDF document text
    • http://boldly-grow.com/reading_comprehension_for_grade_12_with_questions_and_answers8oz83.pdfIn PDF document text
    • https://cdn.sqhk.co/xiroxozalal/hjdjicw/mazawilewirapekine.pdfIn PDF document text
    • http://idealslimitaly.site/887912522194fmln.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/miller_bobcat_225_nt_coveryd13d.pdfIn PDF document text
    • http://oneitshop.pro/fafubidanuxevujozeagnca.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/telasebisu/48055621613.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/sikiduzokolatus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2f23ae5-b4cd-4309-959b-7e1f6c9a6a1a/96226965958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f983540-13e0-4921-852b-2ba7a195742e/clearstream_2v_tv_antenna_60_mile_range.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/god_bless_america_free_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/sekonic_l-308s_vs_l-308b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d449ac9b-2634-46d1-a81f-043242feaa41/most_fearless_person_in_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c41a7850-177f-4ba6-82fe-ab7f736ff828/mudapukidofirulutid.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/monthly_attendance_record_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fcb2b08-e5c3-4234-bd15-3df097a82ce5/wawuximazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab4a982-9291-49cb-b3d4-7ae170ac1886/dozetu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/49999472040.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/used_cheerleading_uniforms_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/64003349914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4bbc3de-a77b-4197-81e2-ed97f50b8ec1/lidezirariwedolufag.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/65215168919.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_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 5272 bytes
SHA-256: 538b1c3bb2a447ccdda8f62e7a9afea11b3c21efcddcb92945a5d71292a19707
font_01_sfnt_off0000f9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B6 10728 bytes
SHA-256: 08043849ceb2a7d0269f48238462116d3e076f60ae25cd75793c0939a8c69bef

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