Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e52ca0b2259a56…

MALICIOUS

PDF

77.6 KB Created: 2021-02-16 22:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dd2953d12a7c46d225195c314270572e SHA-1: 98cdea0614700efb5debdb5a4e3e0201f1b0db9c SHA-256: 75e52ca0b2259a566352548ebe16cdf7b76b7cc6b22a0ce402464958cb5d1f86
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://leonvi.ru/123?utm_term=how+to+download+windows+10+for+free+on+macbook+pro PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369930/normal_5fdd06c4238fa.pdfIn PDF document text
    • http://gordei2d.com/excel_search_value_in_multiple_sheetsqhhn0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482002/normal_5fcad6cb81e21.pdfIn PDF document text
    • http://repair-planshetov.ru/first_reformed_church_meservey_iowakh5qp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423145/normal_5fdab75f85fe4.pdfIn PDF document text
    • http://digitalmicroteter.xyz/angular_5_template_free_githubievfc.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/serial_dilution_practice_problems_worksheet_answers.pdfIn PDF document text
    • http://sobanurosu.22web.org/5524570374.pdfIn PDF document text
    • http://busurman.space/behringer_xr18_software_ipadfz8in.pdfIn PDF document text
    • http://sedouche.xyz/dixezurosoremigapowin5nj6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5fe7196c555df.pdfIn PDF document text
    • http://samaraexpo.com/bsf_online_form_date22vdz.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/sikuva/31831410409.pdfIn PDF document text
    • http://zorogeloma.epizy.com/ronowojewep.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/revit_keynote_numbering_by_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/wuzimasakobibazixagulub.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/the_lord_s_prayer_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/56076059566.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/22210202800.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/rapivamudedufuvonorak.pdfIn PDF document text
    • http://xiposebajuremi.rf.gd/rubiwekolebuzes.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_off0000efcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCF 5752 bytes
SHA-256: 84384d018aaa9b8575e99363b5f5db4c32d4d28280ad8bdcb69e4bb177b0ba29
font_01_sfnt_off00010361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10361 10796 bytes
SHA-256: 3ffb5b3d14601250c844acc9e63d5280ca4f1c5558af01973a8d451308a357f6

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