Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0561a3cec8dc75c…

MALICIOUS

PDF

93.5 KB Created: 2021-05-14 21:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8d8bb542a35d6c1ebf9e2bccebf447dd SHA-1: defc989a19e83df99523743d60ac641ef63ac3fc SHA-256: a0561a3cec8dc75c9299720f1eb039ba493ea9b939514323b037923c29fad151
104 Risk Score

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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/strik?utm_term=xbox+360+wireless+controller+driver+windows+8.1+download PDF link annotation
    • http://dikegebe.mygamesonline.org/63492327057.pdfIn PDF document text
    • http://gatofupimekow.mywebcommunity.org/1187580703.pdfIn PDF document text
    • http://feremujidonigu.getenjoyment.net/50477501850.pdfIn PDF document text
    • http://pikufufunuti.scienceontheweb.net/liquid_biopsy_breast_cancer.pdfIn PDF document text
    • http://zitekimuzefovar.iblogger.org/nikko_japan_guide_winter.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/fajonubinomeder/dadonufebipi.pdfIn PDF document text
    • http://ruzunol.rf.gd/technical_analysis_of_the_financial_markets.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/lamitowutilopik.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/34346545492.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/metropolitan_life_insurance_beneficiary_designation_form.pdfIn PDF document text
    • http://wegoxoxajenugol.rf.gd/bill_of_lading_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/how_to_make_a_cfg_file_tf2.pdfIn PDF document text
    • http://felepukagerek.epizy.com/online_spanish_classes_for_nurses.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/formato_certificado_de_origen_colombia_guatemala.pdfIn PDF document text
    • http://xiniwipilanaju.atwebpages.com/97239721889.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/84180438.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/60531659499.pdfIn PDF document text
    • http://kojawuze.epizy.com/adjectives_vs_adverbs.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/zaxulekotegebukabo.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/pejewunepatax.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_off00012a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2F 6008 bytes
SHA-256: 6526c62a825065de38997a79799780393b526b483c78e5b412f0dcb69c9a2864
font_01_sfnt_off00013ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC5 12000 bytes
SHA-256: be517c508a5073344bfe53400c26a6bb512528c2cfb7ff3432a38ca128293690