Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b766352cfa6f5e2…

MALICIOUS

PDF

78.7 KB Created: 2021-03-07 17:08:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 8074b6b9d1082529f41905a2d2137424 SHA-1: f5df0f65b1afbe948b0af946c1c484cd7bb97c98 SHA-256: 6b766352cfa6f5e25cc129b6b501936e43f6c7067f5c4584ca3150d56cb61c00
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/wix?keyword=bell+hooks+all+about+love+pdf PDF link annotation
    • http://bella24.xyz/free_piano_sheet_music_classical_easygur6d.pdfIn PDF document text
    • http://zutalinezar.iblogger.org/pet_rock_manual_espaol.pdfIn PDF document text
    • http://dodisof.iblogger.org/3d_hologram_video_free.pdfIn PDF document text
    • https://pesawuzopedeg.weebly.com/uploads/1/3/5/3/135327269/gusekuzudovirot.pdfIn PDF document text
    • https://wakevilapiz.weebly.com/uploads/1/3/4/9/134903367/fuwopasukezu-kosojedasemodi-lipazuzodajek-wurasaxinubuzed.pdfIn PDF document text
    • http://ninefukesat.iblogger.org/who_is_the_raven_in_animal_farm.pdfIn PDF document text
    • https://sesifubonimexa.weebly.com/uploads/1/3/5/3/135317238/f3ea2e.pdfIn PDF document text
    • http://formulamoney.top/rosemount_3051cd_configuration_data_sheetg1im9.pdfIn PDF document text
    • https://puwixono.weebly.com/uploads/1/3/5/9/135957765/ac5a3902ba941.pdfIn PDF document text
    • https://kivasemav.weebly.com/uploads/1/3/2/6/132680863/kidekatodititi.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/levovod/cauda_equina_syndrome_mri_report.pdfIn PDF document text
    • http://bezegorev.epizy.com/2014_chevrolet_malibu_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/synthetic_antimicrobial_agents.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/call_of_duty_4.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/3_bedroom_house_plans_south_africa.pdfIn PDF document text
    • http://gabitotedusaled.epizy.com/91835032153.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/batman_arkham_origins_ps3_guide.pdfIn PDF document text
    • http://jadefixadejin.rf.gd/nudemavuwajinokop.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/timestamp_format_in_oracle_sqlldr.pdfIn PDF document text
    • http://boterafozove.rf.gd/bahut_aayi_gayi_yaadein_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/case_animatronics_apk_rexdl.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_off0000ec34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC34 5348 bytes
SHA-256: 2452ab066e046a3c34688334e0da8c27bb68614c21a40d89f6ccffa68ae0c0c3
font_01_sfnt_off0000fe65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE65 14660 bytes
SHA-256: 3e6db0fd58f7d31d156bcb4ffe98b86964bb2cd4e7af5c00e72dac7527898642

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