Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1984b4ad0e245d…

MALICIOUS

PDF

71.2 KB Created: 2020-12-18 07:26:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 90ce10bc6bbd2d68f84c14f2205c29d6 SHA-1: 1780d69afa3e113c612c21d115f23e0b10dc4a44 SHA-256: ee1984b4ad0e245d127c9c877f7abc22ef998a9b6c88b33a7f65b9b21984979e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'https://traffset.ru/strik?utm_term=marmot+ajax+2p+weight', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/strik?utm_term=marmot+ajax+2p+weight PDF link annotation
    • https://sevujamipoviku.weebly.com/uploads/1/3/4/2/134234740/749191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5fd18617b0602.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/zixowofujij.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/3076979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421339/normal_5fd6820e28566.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451555/normal_5fc011c4a0625.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/baxekojojexusol/kagifab.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66db9a8793968642e0201/t/5fc6a1463570fb44d1ec2d2f/1606852934884/tip_tap_soccer_mod_apk_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc595465e8e827d42adb05d/t/5fd6dd349264095525e64a30/1607916853209/tamil_songs_video_ing.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59b71c6229360ecccef93/t/5fd74030dca22152605d3cdb/1607942194010/65570232386.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_off0000d938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD938 5396 bytes
SHA-256: ffed43b3fcd1ecff5ded4fcafff468493ec8f682dad8f7be79954d454994d348
font_01_sfnt_off0000eb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB92 10916 bytes
SHA-256: adcc749851b677a0c132ec9494160086445f240c2cfa23db558643d97dee06ee