Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7a1e0b83cd9f43…

MALICIOUS

PDF

100.5 KB Created: 2021-02-13 14:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ca7064a6eb6f48d43e82a9bb1c0544f SHA-1: 4598a8377e64eb294e6814793afbe0fe55487a74 SHA-256: 1b7a1e0b83cd9f43742f23b3cc0cc156e2e523085bba9d4ca1cc40be9494377d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to mimic search results for 'Philips Avent sterilizer instructions'. This lure is likely intended to trick users into visiting a malicious website for phishing or to download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL is a primary indicator of compromise.

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/wix?keyword=philips+avent+sterilizer+instructions
    • https://static.s123-cdn-static.com/uploads/4425760/normal_60083457d69d9.pdf
    • http://neyroskakalka.site/gedilubisibuzikaozkdc.pdf
    • https://static.s123-cdn-static.com/uploads/4388173/normal_5fde41221a5d8.pdf
    • http://shoop-fm.ru/305556991816n0zx.pdf
    • https://cdn-cms.f-static.net/uploads/4413566/normal_600c3cc1e8cea.pdf
    • http://yachts-4-sale.com/16706047682iukr1.pdf
    • https://static.s123-cdn-static.com/uploads/4498366/normal_5fcee15dac893.pdf
    • https://cdn.sqhk.co/tefozakozup/qtdghgh/plex_windows_app_slow.pdf
    • http://nukakerosezopep.22web.org/gta_4_game_android_1._com.pdf
    • https://static.s123-cdn-static.com/uploads/4494436/normal_5fefccce10aa2.pdf
    • http://izzzaaa.space/blood_bowl_2_trophy_guide61oqb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gifojuxaxeva/texas_franchise_tax_report_filing.pdf
    • https://s3.amazonaws.com/dapekufoxiraku/colchester_high_school_sixth_form.pdf
    • http://pobipegosaba.epizy.com/best_google_data_studio_templates.pdf
    • http://mafasegu.epizy.com/2005_lincoln_aviator_user_manual.pdf
    • https://s3.amazonaws.com/pevuwarobuvowa/23008590872.pdf
    • http://mukenoveran.rf.gd/australian_bird_sounds_free.pdf
    • http://lavorusopanutaw.rf.gd/avocet_mining_plc_annual_report.pdf
    • http://xunonevikonog.rf.gd/21993895899.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013270.bin
04a2e670a7fdfad7e6e87cb6a8aec15a405fa71bed0daa01d7cca212ffd0fb9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x13270 5132 bytes
font_01_sfnt_off000143ee.bin
5591756f0473339fd2d4c5d434ae5d29216f7fda1b421531c13f78afac7a207a
pdf-font-stream PDF embedded font (sfnt) at offset 0x143EE 13356 bytes
font_02_sfnt_off00016f27.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67
pdf-font-stream PDF embedded font (sfnt) at offset 0x16F27 16092 bytes