Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6371578b264ec2…

MALICIOUS

PDF

83.6 KB Created: 2021-03-31 09:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03e2a612c282b002e588873687a9da6a SHA-1: 26f27f77a295e7f8cd765da6ad8bbda81290c1c9 SHA-256: 2f6371578b264ec28d5d4da001ddaf351ed5a036b7abccd6c071d2df2b4e549f
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing lure. The document body, though heavily obfuscated, suggests a theme related to 'balanitis', likely to trick users into clicking the malicious link.

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://golowaki.ru/123?utm_term=balanitis+adalah+pdf PDF link annotation
    • http://vsspb.ru/87248177634gehiz.pdfIn PDF document text
    • http://levantemosaic.com/hombre_lobo_americano_en_londres_pelicula_completa_en_espaolhi2zy.pdfIn PDF document text
    • http://xubabutogazide.22web.org/at_t_u_verse_guide.pdfIn PDF document text
    • http://ledimpress.biz/fogukularilipimajuvorevvbfb.pdfIn PDF document text
    • http://prizinsta365.site/brock_biology_of_microorganisms_15th_edition_free_downloadht876.pdfIn PDF document text
    • http://msertis.xyz/fosuvos8lg4.pdfIn PDF document text
    • https://poburazaz.weebly.com/uploads/1/3/5/9/135993358/wepogopekoreruxow.pdfIn PDF document text
    • https://zewakifu.weebly.com/uploads/1/3/0/7/130740590/189592.pdfIn PDF document text
    • https://fafafupoxojamu.weebly.com/uploads/1/3/5/3/135350358/3b8e68.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/jofunozuzof/full_smolov_spreadsheet.pdfIn PDF document text
    • http://tigaxulajaju.epizy.com/how_to_jumpstart_weight_loss_after_60.pdfIn PDF document text
    • http://zukowuneze.rf.gd/vampire_diaries_season_3_quiz_sporcle.pdfIn PDF document text
    • https://ddd90330-5837-4e0c-b2f6-9383941cd2db.filesusr.com/ugd/568e2c_e5a2953ebc0b47df93f9322ed812da68.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/geradi/83776537824.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/how_to_do_a_covered_call_option.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/dynamics_crm_dynamic_worksheet_import.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/93418832576.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/english_grammar_competitive_exam_questions_and_answers.pdfIn PDF document text
    • http://telawusufolij.epizy.com/el_derecho_penal_en_puerto_rico.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/minecraft_windows_10_download_free_2020.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_1b3641eb183645dbb29f9e1d49ed439a.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_off000105aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AA 5080 bytes
SHA-256: a16bd8f5b43dee1b5a758b7e66fb2b7b7523ad8cbc7c73cde4747a41051eca17
font_01_sfnt_off000116ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EF 12816 bytes
SHA-256: cd794999337685a8090b59a338dfbd24c259299d3c7734d3d8bab0765f6b8f1b

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