Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d724587715d7df4…

MALICIOUS

PDF

71.9 KB Created: 2021-01-15 22:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 19e32bbcc2876ba3ee313b31b2720d3c SHA-1: 7ed306973ff66caf39293505ef2f62b6eba2d4a8 SHA-256: 8d724587715d7df460dd763968929f2f6976783f36b2fdedc9890f079d949d7f
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 0.9974

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://traffine.ru/wb?keyword=myrkur%20folkesange%20review PDF link annotation
    • https://site-1196306.mozfiles.com/files/1196306/pufawimekuwanizideregar.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/rujumomowixa.pdfIn PDF document text
    • https://site-1171105.mozfiles.com/files/1171105/timonadazuwolomogegogoku.pdfIn PDF document text
    • https://site-1084156.mozfiles.com/files/1084156/21455379313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_5fc1569ca67ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vebogotexaf/smash_bros_palutena_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/nutritional_information_pizza_hut_chicken_alfredo_pasta.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/zujanifabupurixulukipixu.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/amazon_alexa_app_android_tv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CF 5060 bytes
SHA-256: e5c48312ca2ac8abc8b265d2982e2b4196c6b764d546047ac046bf46de390954
font_01_sfnt_off0000e239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE239 10656 bytes
SHA-256: f63b49f03d84a5a44499534dee586b7b711dbd4d792b11ccefd7a461b59dbcb6
font_02_sfnt_off00010560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10560 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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