Malicious PDF — malware analysis report

Static analysis result for SHA-256 be84d15319b46be1…

MALICIOUS

PDF

74.7 KB Created: 2021-03-30 02:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5139a6cf0fb3dde277077ef61495be3 SHA-1: 8560b82a7f0c5eb2dcd355e713ffb0da374e981f SHA-256: be84d15319b46be1bf0b891716ff248490d5e01974900cdd2f32ef0178736c75
94 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL disguised as a TOEFL practice test, likely intended to trick users into downloading malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and a machine learning classifier also flagged it as malicious. The presence of embedded URLs and the overall detection suggest a phishing or trojan distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8022

Heuristics 3

  • 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
  • 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://druttle.ru/award?keyword=toefl+reading+practice+test+free+download+pdf
    • https://cdn.sqhk.co/daposofoxig/hfxDDX3/16269069074.pdf
    • https://static.s123-cdn-static.com/uploads/4482858/normal_5ffea682dd49f.pdf
    • https://cdn.sqhk.co/gukugifixija/gYgdvii/28627218029.pdf
    • http://foluxokifoni.22web.org/singer_7469q_confidence_quilter_reviews.pdf
    • http://znakomstva69.space/512767184858mvxh.pdf
    • http://neo-tp.ru/acer_chromebook_15_intel_celeronq2rpy.pdf
    • https://cdn.sqhk.co/bozogekeji/jgg5jbC/bonapivisimelu.pdf
    • https://cdn.sqhk.co/denirinodo/1jiejeH/used_car_novated_lease_calculator_australia.pdf
    • http://urott-hu.com/kifeboneser2dpfa.pdf
    • https://cdn-cms.f-static.net/uploads/4494166/normal_6022086a960d6.pdf
    • http://bloodcraft.online/kovilemazrp2m.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://funazowo.rf.gd/alamofire_file_name.pdf
    • http://lexalerov.rf.gd/ewi_5000_setup.pdf
    • http://kuxomexepus.epizy.com/91190376349.pdf
    • https://s3.amazonaws.com/wixanarer/49367302540.pdf
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_be1b2410d4dd436aa38fdd852d0752bd.pdf?index=true
    • https://s3.amazonaws.com/wizedumi/mazevoravezewazimoxuf.pdf
    • https://fe92b815-f0fe-4223-924b-659339f44b90.filesusr.com/ugd/8f64fc_943d9dc7781847e7bfb1eb4d3736d075.pdf?index=true
    • https://11627308-8c8f-4f08-99ed-0ad85160907d.filesusr.com/ugd/682d1c_9893dd98ce1d47a8921506a77fd0b621.pdf?index=true
    • https://s3.amazonaws.com/legapatatezisa/loninunetewitufefulev.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/nadajipinoredakevaxobinu.pdf
    • http://jowemalawebabe.rf.gd/3739032711.pdf
    • https://s3.amazonaws.com/vexosafugunu/globo_play_globo_reporter_ontem.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc84.bin
bd8b15e07dc35ad03cdab1a8dc5638ba94ea93dd5c38f55f4a217c483212c6d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC84 5364 bytes

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