Malicious PDF — malware analysis report

Static analysis result for SHA-256 d824333ace784647…

MALICIOUS

PDF

78.8 KB Created: 2021-02-18 03:41:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f2259ae4e7dca4de6f87bce82a1537e2 SHA-1: 2a8c7a9dbf8f4ed437aecd44c152bd83181e45df SHA-256: d824333ace7846471b074ae77b98c3e9310ba27271bc108b0a6d1b3b41c36c28
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Google maps street view iphone' and 'wkhtmltopdf', suggesting a lure to a malicious link.

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://seumenha.ru/strik?utm_term=google+maps+street+view+iphone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460678/normal_5fe817dde9dc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411270/normal_5fc5852805907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_5ff8f1f7d05b1.pdfIn PDF document text
    • https://pekatizofu.weebly.com/uploads/1/3/0/7/130739174/444f43.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/zurovajij/fimuroxif.pdfIn PDF document text
    • http://josisuvo.epizy.com/school_days_hq_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/capitulo_2a-_2_reflexive_verbs_continued_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/plastids_structure_and_function.pdfIn PDF document text
    • http://gemesiwexalizel.epizy.com/68367135547.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/food_log_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/bikotejufunikasu.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/dozavelejukabibux.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A6 5416 bytes
SHA-256: e2b99fde5787f78175f391317ef030c16d0601b880331e38ac82713ca916652e
font_01_sfnt_off0000ebf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF3 1964 bytes
SHA-256: 7c4880219e9625d2a4e9dd9baa4d28a857a57833d139bcdeda5c52338edb6e7f
font_02_sfnt_off0000f4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FF 10264 bytes
SHA-256: f53ec62bf5f5a861e81fdfe4e452cb0b3ce6ffc035a5f43bfc39252d9c75b80d
font_03_sfnt_off0001186e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1186E 16292 bytes
SHA-256: 48764e87c02b9a84c146af116970153065bad6898a334da5007f310d7729f136

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