Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbcc5b0f71fe550d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-02 03:58:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: eeaca4c5257eb8f9828ebe67f0310eec SHA-1: e10a130e0967203f7aadfba3de21ff7344e9ada5 SHA-256: fbcc5b0f71fe550da8a5ae206c35a94a7c1f738bc80dd66405d9f89940309b82
96 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating an external URI and is flagged by a machine learning classifier as malicious. The embedded URL points to a domain associated with phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and the presence of malicious URLs suggest an attempt to trick the user into visiting a compromised site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/aws?utm_term=actividades+de+lectura+y+escritura+para+ni%25C3%25B1os+de+primer+grado+de+primaria PDF link annotation
    • http://vagoneviwesum.66ghz.com/13143917363.pdfIn PDF document text
    • http://disconto50.pro/jevif39wji.pdfIn PDF document text
    • http://sejusadi.22web.org/rubobaji.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/tupperware_550ml_rice_cooker_instructions.pdfIn PDF document text
    • http://vehicleusains.com/vovonudafeselejogis3o8i3.pdfIn PDF document text
    • http://euroshopmn.space/687050638779g9i6.pdfIn PDF document text
    • http://talakam.space/557859372107qh9b.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/pilazi/biology_1st_year_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/american_english_file_3_free.pdfIn PDF document text
    • http://movixup.epizy.com/pidotimoxoxepu.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/css_template_header_body_footer.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/35602126129.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/mulesetalotumokape.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/membrane_permeability_lab_report.pdfIn PDF document text
    • http://bovatug.rf.gd/pinitagokakapasijajebo.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/67905477929.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_off0000ef69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF69 5756 bytes
SHA-256: b2c0599257db83fe0ecd51d4651a41d208e12278e80e796a87034585cf9e8e82
font_01_sfnt_off000102bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BB 11488 bytes
SHA-256: 386cc0db5f3960eee7131e756d2214e588a2ac7a60876a9077bfceffc0f8779b

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