Malicious PDF — malware analysis report

Static analysis result for SHA-256 866133b4d4b63cbe…

MALICIOUS

PDF

75.0 KB Created: 2021-02-20 22:19:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eb03ffcf75ba3ea6d2e08f3734149b80 SHA-1: 9822d24012e9452d539ad636f6df8c314e70e967 SHA-256: 866133b4d4b63cbe8881748e77746b149fb204896358820dabaf4b8cdba87a54
96 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 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://druttle.ru/wix?keyword=samsung+washer+manual+drain PDF link annotation
    • http://meetraisins.club/letras_tablaturas_y_acordes_para_guitarra_de_canciones_en_ingles0p57h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444885/normal_5fda4a8f24247.pdfIn PDF document text
    • http://getbuiss.online/89459758311ao6xj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475389/normal_5fe9a92937898.pdfIn PDF document text
    • http://kabejorudedofom.22web.org/rajuba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_600dc7b09f0a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5fdc56d219f53.pdfIn PDF document text
    • http://texno3ua.com/tejore_kamalapati_borgeetta7ip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_5fc825b380360.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/xotomisen/didulid.pdfIn PDF document text
    • http://kesekerezox.epizy.com/murudolixaxobutaxadek.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/cf_auto_root_i9300_4._3.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/cisco_anyconnect_free_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/possessive_singular_and_plural_nouns_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/2126060498.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/shark_river_nj_fishing_report.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_off0000e56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56F 5432 bytes
SHA-256: fb5c675f2b538d444050fc91026a51b60ba25e9c3defa5d72ff670e065ed219d
font_01_sfnt_off0000f7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C4 11116 bytes
SHA-256: 7c27e92f9ffa3c3c5f472466a84fbaa2bef508ff71dbe5ad2a81103269c9bf43