Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd821e59eab9b55b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-30 07:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30f872d63e5186dfa400dcb7bc6e1906 SHA-1: 7e3c4c8d5d069ef08f2619ef8c20ad80c3f34b1c SHA-256: bd821e59eab9b55bb4a3d89fb3d277884683d13fe8342b21577c7876bd50aee7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://ponafet.ru/123?utm_term=anthropometry+procedures+manual+nhanes', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded content suggest it is designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/123?utm_term=anthropometry+procedures+manual+nhanes
    • https://cdn-cms.f-static.net/uploads/4383302/normal_6054fcf4a6903.pdf
    • https://cdn.sqhk.co/matikefateri/jSNvgjw/kepopebusig.pdf
    • https://cdn.sqhk.co/jidulopavoji/fS4hcPy/tiktok_songs_clean_youtube.pdf
    • https://cdn.sqhk.co/feguzuvubut/fyCakZJ/64081525704.pdf
    • https://cdn.sqhk.co/merabuvi/cXrhSRG/classical_music_radio.pdf
    • https://cdn.sqhk.co/xuwadezab/NuTRgch/rekufapop.pdf
    • https://cdn-cms.f-static.net/uploads/4393483/normal_601a38864c1b7.pdf
    • http://lizakoku.22web.org/bajumopijojamakitidobita.pdf
    • http://bukawavado.medianewsonline.com/bsc_mathematics_download.pdf
    • https://cdn-cms.f-static.net/uploads/4471704/normal_60149dea6aa23.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nasuxenabo.epizy.com/tsurumi_pump_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/42423ed7-8fbc-4b1a-86e0-e45016837e9b/how_much_freelance_graphic_designer_make.pdf
    • https://s3.amazonaws.com/radubozufiwo/logic_grid_puzzles_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/e4f41965-b63b-4d06-b7fb-203e2f83b0c0/fawinekofugabese.pdf
    • https://uploads.strikinglycdn.com/files/8ed52e92-3a9e-4de8-928b-a2fee9f0b238/zakojibapuvewa.pdf
    • https://uploads.strikinglycdn.com/files/55793dde-0f2f-49e4-8c60-110ecf260ea7/business_mathematics_questions_and_answers.pdf
    • https://s3.amazonaws.com/kigavanus/formal_dress_styles_for_large_bust.pdf
    • http://xirozaza.onlinewebshop.net/rofapewipu.pdf
    • https://s3.amazonaws.com/guxosa/66629072663.pdf
    • http://mujozigimak.rf.gd/60746966866.pdf
    • https://uploads.strikinglycdn.com/files/ad0676d2-e87b-415d-8cce-6266a49acf92/alvin_plantinga_ontological_argument_summary.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48e.bin
52ece0068d7c74d8122b99f92dd8587d17953feeaaaeeedf196f3b07d7dd6579
pdf-font-stream PDF embedded font (sfnt) at offset 0xE48E 5404 bytes
font_01_sfnt_off0000f6cc.bin
ad161a94a39ef5be80daff16b01182985cdb39a75a3b60aef5d65366321c01e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CC 10916 bytes