Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1f8721299178a3…

MALICIOUS

PDF

76.6 KB Created: 2021-04-05 19:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9c05d2ec9ee3ca942240ca6ebf2911ec SHA-1: dc7b69eda3ce921fd5c73966c4d6b23c882a32a1 SHA-256: 2f1f8721299178a3a777eb690803e4838a90f6d9fb8b594a52c1904f1cf2a7e2
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 specific ClamAV detection of 'Pdf.Phishing.Trojan'. The embedded URL 'https://baarspo.ru/123?utm_term=simple+baseball+rules+pdf' is the primary indicator of a phishing attempt, disguised as a document about baseball rules. No scripts were extracted, but the PDF structure and external URI heuristic suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/123?utm_term=simple+baseball+rules+pdf PDF link annotation
    • https://cdn.sqhk.co/mofijovelu/Z378gf1/81851511420.pdfIn PDF document text
    • https://cdn.sqhk.co/legexere/v0idvhe/didi_gregorius_new_contract.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/southern_blot_hybridization.pdfIn PDF document text
    • http://lighterusb24.site/35988262262b4r5y.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/numerologia_tantrica_kundalini.pdfIn PDF document text
    • http://laludinemolat.sportsontheweb.net/pexuroduluvezotajilipeb.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/gearhead_bluetooth_mouse_driver.pdfIn PDF document text
    • http://gtomishebs.xyz/self_assurance_definition_thesauruscu8qy.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/xeponodij/ortofon_cartridge_alignment_protractor_free.pdfIn PDF document text
    • http://pikiregofi.epizy.com/smedley_butler_war_is_a_racket.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/agneepath_full_movie_free_480p.pdfIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_6911a8a67e844fae8a556adced1c14ce.pdf?index=trueIn PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_6ce14c2e5ab5499f813a95971210bac9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/niporofez/automation_testing_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/adobe_reader_setup_offline.pdfIn PDF document text
    • http://jofijegisa.atwebpages.com/linkedin_profile_optimization_for_dummies.pdfIn PDF document text
    • http://zerakunutage.epizy.com/73407167016.pdfIn PDF document text
    • https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_0a9ef1e04cae4d0caf96fe1bc411ad2a.pdf?index=trueIn PDF document text
    • https://58fabbca-0322-4868-a582-948aa19840f9.filesusr.com/ugd/93748c_d11153fc5fb54fbf911a5ab50d4786fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xirixepo/roman_catholic_devotional_songs_tamil_free.pdfIn PDF document text
    • http://zenutetuzobo.epizy.com/import_to_anki.pdfIn PDF document text
    • https://bed2724e-b6a4-42c6-a365-5b2dc6a82e2f.filesusr.com/ugd/9f087b_b919ba21afd94ecdb30de8bd8fd0b329.pdf?index=trueIn 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_off0000ed8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8D 5428 bytes
SHA-256: d539aa220e04b6ba00c24933d6156630a185d852616268821373472afc6705fc
font_01_sfnt_off0000ffda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDA 10868 bytes
SHA-256: c3b4e4b54df98c94ffbd446432ec1a8ec9f17015f8ca3095bd413aa628cad291

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