Malicious PDF — malware analysis report

Static analysis result for SHA-256 5806b6d1e98862f2…

MALICIOUS

PDF

152.1 KB Created: 2020-12-11 04:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: afe0a58d627cc987e5e7638b1418d1b8 SHA-1: dc7a8ea21a31a46f5638638765ccc0221b641d75 SHA-256: 5806b6d1e98862f29ffd02af55d6ce86bd8e0eb850ddf4265b9883f595f579b7
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 0.9980

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://trafftec.ru/123?utm_term=physics+textbook+pdf+class+10+ssc PDF link annotation
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/xetakoxejikabuz.pdfIn PDF document text
    • https://tokafiwunan.weebly.com/uploads/1/3/4/3/134372509/sitoma.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f2b473-1403-4160-a1f5-065f5b9f6d67/wediran.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37464f38-2f35-4f6a-9dcf-468d63d7fede/hugh_laurie_musical_instruments.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e10d56f-3bf0-4429-8cbb-6f68f22dfefd/ortiz_middle_school_santa_fe_nm.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b5908b9e860b7b22bd08/t/5fcd364f33187724c4fc753e/1607284304129/xitojirabomawa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6666e27a199023adae7b0/t/5fc946b17815eb30dbeda7c4/1607026357356/36987670221.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6bb76457125654337d16/1606380475066/pixokasomukomotil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc292a4e5c7695ca9a65d9d/t/5fc476c91972c46e3c2c85b4/1606710987125/49302879001.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4f781ec917750a3f1c107/t/5fc80c4b3e8bcb4f70c969ac/1606945868968/zazesanuzikugasubiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf24761e25426e1fe1e0c/1606283850808/star_wars_rpg_dug.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf7baec0a1d2b4e5545e4/1606219707443/37283766523.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E16D 2940 bytes
SHA-256: 5abd1102bbb49cd9fee3e8c7db4f4b96944035d8cd52b1c4794f50b825db5b40
font_01_sfnt_off0001ebf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EBF9 5716 bytes
SHA-256: 79845790d37ac2c5e45398b9ff12127595baa582a1a2eda30f72ba3e74f0e050
font_02_sfnt_off0001ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF7D 5284 bytes
SHA-256: b41facdd0e8b626db1ebf83bba524a63a32d563a4cb9967d2d57288a8fb81bbc
font_03_sfnt_off00021127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21127 12008 bytes
SHA-256: 137bdc1023d945d72e3e926b46a227204ba20c7cc6bc9ab57ccdb63f7bc56e97
font_04_sfnt_off00023a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23A4E 16248 bytes
SHA-256: 0ea623188829e62f7972c55b0b7198e0d565e11dce8ea6d8f411bd572d368607

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