Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e015c4066a20b0d…

MALICIOUS

PDF

84.4 KB Created: 2021-03-03 09:21:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 80f77bc7739c9f70d8f5724ff6a2cfc8 SHA-1: f3318299a0fd751119f70cba14efe5ca922b7a59 SHA-256: 4e015c4066a20b0d41305fddb9a175f009dba9e09c78f655bfd5d98bc13139a6
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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://leonvi.ru/123?utm_term=how+long+does+dough+cycle+take+on+bread+machine PDF link annotation
    • http://vipadminler.org/jifigimaulinc.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/jacdec_airline_safety_ranking_2020jj3tk.pdfIn PDF document text
    • http://job-finder.space/95593389261xvvp0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_60256089bf876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421360/normal_60282f43da023.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403534/normal_5ffd1b269de20.pdfIn PDF document text
    • http://mihetos.xyz/17261102590gf8yj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466135/normal_600bf154ccdc4.pdfIn PDF document text
    • http://hookup682.site/146129247634lk2x.pdfIn PDF document text
    • http://poradoit1.site/name_generator_for_games_free_fire0jgsc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/riverdale_season_2_episode_1_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/importance_of_effective_communication_skills_in_healthcare.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/dictionary_definition_file_format.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/43058690535.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/lg_k20_plus_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/informal_assessment_examples_for_preschoolers.pdfIn PDF document text
    • http://puzuzebud.epizy.com/sims_4_january_2020_update_broken_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/chandogya_upanishad_sanskrit.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/clat_legal_aptitude_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/how_to_answer_tell_me_about_yourself_in_interview_quora.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE3 5596 bytes
SHA-256: 7c0c8d1872c78d50fc03e67d11e3fde4498da2ac42d641583134f7598ff967b1
font_01_sfnt_off000111cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CF 10692 bytes
SHA-256: b83d6e5ba9a4fa6fe36df17059fc7874782cdc968685d2d79128651a8c25c5a7
font_02_sfnt_off000135ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EE 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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