Malicious PDF — malware analysis report

Static analysis result for SHA-256 01339cc0cad93047…

MALICIOUS

PDF

74.7 KB Created: 2020-12-04 07:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8428bc41320df50eb0d3e4ea77bf40bc SHA-1: 94efcffdbb62dc4767ec1543895d0ee4bdd46cb8 SHA-256: 01339cc0cad9304708b1f9ee479b0ee6b24b61a5a2841b6d31365bd96045f6de
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://traffine.ru/strik?utm_term=graham%2527s+law+of+effusion+worksheet+unit+5 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5fb30de125538.pdfIn PDF document text
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/774cf89c16.pdfIn PDF document text
    • https://wizamivakujeji.weebly.com/uploads/1/3/4/5/134526499/2bb05396637bf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421058/normal_5f9ad6f25ffe2.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/4692960.pdfIn PDF document text
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/wefulelixanutuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/711575d0-7851-4af6-b8b6-0dddedb7b861/72231274696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fe440e0-9767-45f1-b1a1-facc0f668b2a/zaguburo.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/aula_internacional_1_espaol.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23E 5352 bytes
SHA-256: 903575575902c3e325d3e09b41d8ae70076d0cf75c46e78801b31f75ec43c1af
font_01_sfnt_off0000f467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF467 11960 bytes
SHA-256: e3d6730e21df9bd6baaaa6e9f5d422fa89c0db130261cf4d38f492961eb03e70

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