Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea38854f0344c32…

MALICIOUS

PDF

80.0 KB Created: 2021-03-02 13:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ef3c3afa20b3fe7cbafb384e204a4939 SHA-1: bedca0e0132f604d5951c041972ad9e3065cf773 SHA-256: 6ea38854f0344c3215bee142143b63574aa64e64d5d59c27faa7f8b4f516867f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, suggests a lure related to 'Ozymandias exercise answers', aiming to trick users into visiting the linked URL.

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://leonvi.ru/wix?keyword=ozymandias+exercise+answers PDF link annotation
    • https://cdn.sqhk.co/nuvexajamu/ehbq5ja/this_means_war_song_gospel.pdfIn PDF document text
    • http://allfreebets.ru/pere_ubu_worlds_in_collision_reviewb39ds.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/gjiiabq/what_we_say_hi_in_japanese_language.pdfIn PDF document text
    • https://cdn.sqhk.co/kapipota/frhd4hc/cartoon_crowd_background.pdfIn PDF document text
    • https://cdn.sqhk.co/jezumasulej/aibighd/wezetupadobogok.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/YyYhcyX/27802270440.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/hbhahd5/crossfire_x_pc_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/aijj2jg/1726142828.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/1jagheU/production_line_industrial_revolution.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/lomiwexuva/bigomixigewikaxujuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/bandhan_bengali_mp4_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/xugekijatos.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/guxirawuwuvokukobozasem.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/conversion_worksheets_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/synonyms_worksheets_for_grade_4.pdfIn PDF document text
    • http://puxagere.epizy.com/30979249746.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_off0000fd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD80 5392 bytes
SHA-256: 59119bb199f1b0584b9e589e4ecef08acc65f376bb4945cb728d39e849d1e568
font_01_sfnt_off00010fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD9 10440 bytes
SHA-256: 796b62b6b95d679d40f23d007982f3adcb7712bcd48ff5e67feef97be56ee7fd

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