Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dab4675cf3b2f85…

MALICIOUS

PDF

77.9 KB Created: 2021-04-05 20:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 300a0b75ecd27ae587a2c84e3d95daaf SHA-1: d50408a4748f6871cb62ff73359061c443f04c30 SHA-256: 5dab4675cf3b2f85192ed9a2b16aee1e4499492615b27116559250bca86e0571
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malware or providing sensitive information. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/award?keyword=common+log+and+antilog+table+pdf
    • https://cdn.sqhk.co/lewikokezina/nhchdX5/all_west_native_american_basketball_tournament_2020.pdf
    • http://mx50off.pro/what_makes_a_good_speaker_standtj09c.pdf
    • http://ludshop.xyz/65173703626cmbr7.pdf
    • https://cdn.sqhk.co/vibisimak/hjfhfji/planet_alignment_today_2019.pdf
    • http://nesobaka7.xyz/university_physics_volume_2_answersl2yxf.pdf
    • http://visiblawty.com/dodge_dash_light_meaningsnmhmb.pdf
    • http://goodxday.xyz/mezewefotejixodu315h8.pdf
    • https://cdn.sqhk.co/zosurinipin/Hif0gcj/60420526600.pdf
    • http://arenaprobet.com/55086888373ypoas.pdf
    • http://podcard2020.site/54475438647zekhz.pdf
    • https://cdn.sqhk.co/pubodegosog/dihifcA/free_printable_calendar_template_august_2018.pdf
    • http://santecmb-sarl.com/82571017900o1teq.pdf
    • https://cdn.sqhk.co/sowumavag/jieij5G/gozud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kagedatabujo/algebra_2_matrix_operations_worksheet.pdf
    • https://s3.amazonaws.com/gozifep/vituxu.pdf
    • https://uploads.strikinglycdn.com/files/4a599771-3cfe-4e35-92a9-368668caffdc/vunagigavezuvijojumalime.pdf
    • https://s3.amazonaws.com/gupojakami/bissell_powerforce_bagless_upright_vacuum_manual.pdf
    • https://s3.amazonaws.com/fevobelijogal/le_petit_prince_antoine_de_saint_exupry_analyse.pdf
    • https://s3.amazonaws.com/lanorolowu/apache_poi_for_selenium_webdriver.pdf
    • https://s3.amazonaws.com/rebomedug/gefumuzitexaxabitasixige.pdf
    • https://uploads.strikinglycdn.com/files/45295cbe-5b8b-46e5-83a7-6e8d9d870552/54597612292.pdf
    • https://s3.amazonaws.com/wovugi/16043490890.pdf
    • https://s3.amazonaws.com/gadumagabusodel/famubipajepagamuxof.pdf
    • https://s3.amazonaws.com/nefomojuwet/the_boy_in_the_striped_pajamas_book_and_movie_similarities.pdf
    • https://s3.amazonaws.com/jirebonudur/veselaguvogavaladokesake.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_off0000f35a.bin
31e27fb25c4c6225f07c873db3777fe737fad38f828eec8debaba40bf4ffee9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 5132 bytes
font_01_sfnt_off000104bb.bin
59ca9c5daa8ba7f5a93899a9c0b9c2b7a8846d78a1e6fcf9cfe48f47670cde09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104BB 11080 bytes

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