Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd0beb20bd3efce…

MALICIOUS

PDF

78.7 KB Created: 2021-03-12 01:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ef0a30a62884c00669d42a4c1397ab1 SHA-1: b6fb4b4943df27bf4305b00ed1c9f165c200e479 SHA-256: 8bd0beb20bd3efcea57417aeaadde6d78a3866cb0a4aad55ea7321eedb6a9b67
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 pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the presence of an external URI and the overall detection suggest the document is designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/strik?utm_term=tv+ears+reviews+2019
    • http://malafasa.iblogger.org/katadivosovofopozo.pdf
    • http://vizezokope.iblogger.org/juxomurimufemijadi.pdf
    • https://zuzuvisaze.weebly.com/uploads/1/3/0/7/130738998/9f18d571a6f.pdf
    • https://cdn.sqhk.co/nejajevafode/i2Nifgg/stencil_art_spray_masters_online.pdf
    • https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/wetedevazakem-gimurotume-viwepuzaxiwapu-tedopej.pdf
    • https://vixezijimike.weebly.com/uploads/1/3/5/9/135993975/5834797.pdf
    • https://kovufevenisote.weebly.com/uploads/1/3/5/9/135981247/5779461.pdf
    • http://sizegivip.22web.org/university_of_alberta_medical_school_reference_form.pdf
    • https://cdn.sqhk.co/sazobenapur/U7Ycxnz/motorcycle_traffic_rider_hack_free_download.pdf
    • https://xefimobabizigur.weebly.com/uploads/1/3/1/6/131637686/5865053.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ddc7b23b-31e5-4b5c-aaad-d3b7cef26861.filesusr.com/ugd/e506b8_0550f30a439a4ec09fb611ac6029d863.pdf?index=true
    • https://s3.amazonaws.com/mivokozibu/obstructive_sleep_apnea_guidelines_2019.pdf
    • https://s3.amazonaws.com/tubupejevomo/nusaz.pdf
    • http://godutiliwaganos.rf.gd/fokajepaze.pdf
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_955746befa3d4fcf9accca0a0615f6ec.pdf?index=true
    • https://s3.amazonaws.com/desenaz/krispy_kreme_doughnuts_inc_annual_report.pdf
    • http://segalemu.epizy.com/19336082896.pdf
    • http://xomikinexeb.epizy.com/vipewoguwulivuxu.pdf
    • https://s3.amazonaws.com/fadedosi/24659779963.pdf
    • http://revobisamapekuz.epizy.com/kelejasis.pdf
    • http://fisazivibutaz.epizy.com/angry_birds_hack_android_1.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f711.bin
d6a376419f5e11865223f5202e54072fa72d36ae5165e345e66783fb92a9cab4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF711 5228 bytes
font_01_sfnt_off000108fe.bin
3a8b71b319cde7bd21e2d236f0522783817cb4a5ca5542b892ed69acd68c2d92
pdf-font-stream PDF embedded font (sfnt) at offset 0x108FE 10700 bytes