Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6cafa05362a37e4…

MALICIOUS

PDF

88.3 KB Created: 2020-12-04 21:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5bd1c1364fe8046311a698c8e2906cde SHA-1: d257b199eba2d4941dc63f8939c373b75d799252 SHA-256: a6cafa05362a37e4b4a6c38c6763e630eccd0833db84ea59af2494b7ad4a6533
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://traffnew.ru/strik?utm_term=shop+ceiling+fans+with+remote PDF link annotation
    • https://rosaguvedofim.weebly.com/uploads/1/3/4/3/134352906/54945e4.pdfIn PDF document text
    • https://nimediwajukijiz.weebly.com/uploads/1/3/4/5/134501673/matavufovozigugidox.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/6073fb2b614e65f.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/tomaxade/taxejakuk.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/log_change_of_base_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fc181e3e18c5c478e34e0ac/1606517220994/rowonuruf.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/siworolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7957244c-8516-4d19-abc3-1f3ff235e0d1/gelutaxigarakonavajoriw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e17134-0760-4231-b8b2-428e9dd388ed/manual_acls_2015_espaol_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b49fe4ed-b581-4eb1-b53a-eed5c0fd27bd/51742918342.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/handy_well_pump_hwp_and_op-360.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/gedad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1d0d6bd14ff0dd2a325bf/t/5fc9e82e9c93c058c48791e1/1607067697792/dulajetimolusajixiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949c5434-8620-4c22-89ed-d61ca277939d/39333652110.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/cardiovascular_system_book_free.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_off00011aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA1 5624 bytes
SHA-256: 739e572a796edd8cd1e0a44d066a278f2d179621d48cac49950a65333e5ff669
font_01_sfnt_off00012dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAE 11444 bytes
SHA-256: e43b6db7cd41b8408c3c07704927ed59dbeadc5530636670e25a95a210036116

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