Malicious PDF — malware analysis report

Static analysis result for SHA-256 500db7ca0d84fe35…

MALICIOUS

PDF

71.6 KB Created: 2021-02-18 05:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bf51be0f78d474235409607b10fdd33 SHA-1: 2c201d7bee39b1bc8bf598eced96306ca22b8cc0 SHA-256: 500db7ca0d84fe35569f29432ff85c85b2c73510be9e24678bf791ad3c5663f2
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, which is a common tactic for phishing or redirecting users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI points to the document's attempt to lead the user to a compromised or malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=white+cypress+lakes
    • https://cdn.sqhk.co/birenejar/FyiexYk/interstellar_rocket_league_car_designs.pdf
    • http://mon-cmbretagne.com/addicted_movie_scriptlb69p.pdf
    • https://cdn.sqhk.co/lewiwifo/fjiifhb/personal_fitness_coach_singapore.pdf
    • http://idem-peshkom.ru/computer_learning_for_beginnersgfqt6.pdf
    • https://cdn.sqhk.co/nadokikado/elbFCha/cheap_las_vegas_vacation_packages_all_inclusive.pdf
    • https://cdn.sqhk.co/zegetaru/bhjrig6/head_soccer_championship_2014.pdf
    • http://mamontov-net.cc/44299110946rykcm.pdf
    • https://cdn.sqhk.co/sopaluwokaja/B3jbfDc/jusewobi.pdf
    • http://dragonflysagewellness.com/pilojaduvazo6s.pdf
    • http://berilunowalaz.iblogger.org/67741577473.pdf
    • https://cdn.sqhk.co/zovaratigu/jjilhcH/piramubokabalikakiba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wememone.rf.gd/hymn_for_the_weekend_piano_sheet.pdf
    • http://bakotege.rf.gd/malayalam_break_dance_songs.pdf
    • http://gotazuvibidok.epizy.com/driver_bcm43142a0_windows_8.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_off0000ddb9.bin
eaa2018c5c4ca88bdd9fc855aad2cd2bea165e5ad32af1bb695b08dffa86090f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB9 5200 bytes
font_01_sfnt_off0000ef7a.bin
43d51b680f6363c4b2d11c1ec9928e50a7afd396c7bb2bff52293115a4a4b71c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7A 10116 bytes