Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b61afb20d99dcb…

MALICIOUS

PDF

75.5 KB Created: 2021-02-18 06:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: edecaf7619f138c6a14547dc0ba8d4ef SHA-1: 910a8231435846884557c74ff3fd890d5704c5cb SHA-256: 00b61afb20d99dcb3dce06aa2840347d3d0c32d0d2569bee0e467c3dd9632da7
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which is flagged as malicious and directly related to the document's title about thermostat issues. ClamAV detection and ML classification strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=how+do+you+know+if+your+thermostat+is+not+working PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496153/normal_5fde9d967e5f3.pdfIn PDF document text
    • http://memaviwebepa.22web.org/genie_bayesian_network_software.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/pWbQGia/dark_knight_rises_ending_song.pdfIn PDF document text
    • https://xebuzoxovekig.weebly.com/uploads/1/3/4/0/134018553/lofar.pdfIn PDF document text
    • http://wajuxerisowo.iblogger.org/83995675177.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/1jbcihj/mujoto.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450036/normal_60096bc92d3b8.pdfIn PDF document text
    • https://makonajarozov.weebly.com/uploads/1/3/4/3/134341931/1978737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446781/normal_601e08f5e8c6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460972/normal_5ff7cce811604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_6005bbea251dc.pdfIn PDF document text
    • https://cdn.sqhk.co/kezinujus/ifjchdh/soxugagufiperilogebi.pdfIn PDF document text
    • https://toxedozopofezi.weebly.com/uploads/1/3/1/4/131453782/4e42f8e6b45ac7e.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/hco8VKw/bafud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366976/normal_5fe44e8234f35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://favukimasinete.rf.gd/conflict_at_work_ielts_listening_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/systematic_theology_books.pdfIn PDF document text
    • http://rarifefivafew.epizy.com/wejuterinore.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/roland_barthes_s_z.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/9389430202.pdfIn PDF document text
    • http://xovimed.rf.gd/16734331800.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_off0000eade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADE 5508 bytes
SHA-256: a03de3eef30026e7e8a1ab4227cd37d0b2e9ddb20e9a064bc39eedf743bf60b4
font_01_sfnt_off0000fd88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD88 10096 bytes
SHA-256: 66f753e38e1e0f90e50313f2dd7d03241292a4d293de67bfb4528ba98c7c7a46

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