Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5826904510dd14…

MALICIOUS

PDF

41.4 KB Created: 2020-11-01 07:27:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 22e0ca2ebd3172283a52503bc4877684 SHA-1: d726fd5f5a436567f23c2ca1195fbd6124f51f26 SHA-256: 8c5826904510dd1493b22777db1da395ac55b9f02cd0fd5269acf424039befd8
102 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.ru/123?keyword=principles+of+finance+scott+besley+eugene+f+brigham+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410953/normal_5f9403ace3adc.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/7946801.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5acab582ad41.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/2339702.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/safado-fodidunixoso.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://uploads.strikinglycdn.com/files/bd1be561-af0c-401b-9f34-638e481c787d/53980265344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84150965-d3ba-4200-9912-33ff639e34c2/natural_american_spirit_color_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c6727c-67d9-491c-a785-b48ff7d9c95f/kotler_and_keller_marketing_management_table_of_contents.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/64296157453.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/52476038345.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/nations_ford_high_school_graduation_2019.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F4 5696 bytes
SHA-256: 9325b95fd0d87267d4711daf02829a43a65037971f685a52e9e08da8817ad535
font_01_sfnt_off00006814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6814 10036 bytes
SHA-256: 1f335bdb0eff4643eb459f49b3582fe895f2287092566557f9852283a6acb4cc
font_02_sfnt_off00008a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A76 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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