Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be10838ec7f90c7…

MALICIOUS

PDF

73.8 KB Created: 2020-12-09 18:14:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 89bdb4160d16a2a07e49a89800bc6fc0 SHA-1: d026f42937b7d2529a6064d1e8c7247ff895c878 SHA-256: 1be10838ec7f90c77d0dac5c74c6030e41b80d2b240a8779340d17ab549173cf
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 0.9998

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://trafffe.ru/strik?utm_term=brave+frontier+the+last+summoner+guide PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf58b2eaf37e3b6492f7b1/1606375602988/11063485860.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bc0f405d5340f328bb30/t/5fc44f9e9d79364840178923/1606700968752/vafelabas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1aa4d5e8e827d42933969/t/5fc56f3ee18c5c478eb3554c/1606774592223/overhead_transparency_master_chapter_23_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5756a6609fd0ee7b04842/t/5fc8f2a9d36c960de91f4e09/1607004841898/resuretegoti.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/calligraphy_layout_templates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1f9b771f5d42aa235ff1/1606229915437/viking_spa_manual_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd8134e-5ca9-4000-9d79-db12472bd9c1/jupugegivekamagoson.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cc6dc14dfd36fef0f123/t/5fc18424f3de5e49b59e0466/1606517818443/fosotebakunemulup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d1c6add-46c9-43fa-bc84-605d24acf639/26264178000.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc136563398ff7515300e75/t/5fd030e5ef76c20f2d403017/1607479527545/elifoot_2019_pro_apk_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc77e28382bec7399f7cbaf/t/5fceffde01eaf4591e1f85ae/1607401439197/62486431764.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBA 5432 bytes
SHA-256: d4adcf06eec077939e9dded878299541e02c94aa0651fc06f428cf4062dc0bf0
font_01_sfnt_off0000e110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE110 10448 bytes
SHA-256: 6ff39862e48c0366ca835c81003f6535636e45d2a6cd765b011997f05f46daa1
font_02_sfnt_off00010537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10537 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140

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