Malicious PDF — malware analysis report

Static analysis result for SHA-256 8453467690b5198d…

MALICIOUS

PDF

82.3 KB Created: 2021-02-18 00:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 92b30a1eb1f7e64ee0774eb55fb70698 SHA-1: 53079047f233c989fa676536783f21312a63ddea SHA-256: 8453467690b5198d616aaff7fd7a91398f5c905dcb17fca01bcb6999ddd0d0d2
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 0.9998

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://baarspo.ru/123?utm_term=minecraft+survival+servers+1.8+cracked PDF link annotation
    • https://burakatotofok.weebly.com/uploads/1/3/1/8/131871829/7cf472a822.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388067/normal_600820ffe8aea.pdfIn PDF document text
    • https://tamipabofoj.weebly.com/uploads/1/3/4/8/134876193/80ab4d784063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462376/normal_6029a0a397885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423430/normal_5fe3c3bfe6839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468812/normal_5fd9656b4fff1.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/vuzuzepekajuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416304/normal_5fde93db85d55.pdfIn PDF document text
    • http://venira.su/jenefimokezowosasarolbh89e.pdfIn PDF document text
    • http://realnoe-obshenie.online/titikorebozewozilafiraxox6pkm1.pdfIn PDF document text
    • http://mikrotikwizard.com/fobupodajalorasiku85pkx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381297/normal_60274709f3769.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446259/normal_5feb03b33500f.pdfIn PDF document text
    • http://ipoteka.net/ejercicios_de_velocidad_y_aceleracio6gd07.pdfIn PDF document text
    • http://erkutungotu.com/server_2016_remote_desktop_services_manager_missingukuy4.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/juzewojavomofew/oracle_msca_developer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/wawujolitagepe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF8 5424 bytes
SHA-256: 4057d63ba16daed46f4afdda29aa590a9b0b45d7c24e2ccf735d6c02c6f6011f
font_01_sfnt_off0000fe94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE94 12328 bytes
SHA-256: ae46653bbf28aaf2b0825fe92d5496f6fa6d077599c649f80ad1551374eb5e54
font_02_sfnt_off000126c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C5 16168 bytes
SHA-256: b83cd8aaa18111cfbc1eb603228acc025c7a9ebb52ad15fbdc2b951192146a2a

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