Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30517c33067c462…

MALICIOUS

PDF

179.2 KB Created: 2020-11-12 19:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d94b9b687d83bb803666e61f6ec050a3 SHA-1: 568d2f11f352dd204a77415563aead79896440a6 SHA-256: f30517c33067c46262c6ed7e7b3e32eda318eaf1593436f0ee1adf6095e359ad
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, and it contains an embedded URI pointing to a suspicious domain. The presence of an external URI suggests an attempt to redirect the user to a phishing or malware distribution site. The document body contains garbled text, indicating potential obfuscation or corruption.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/aws?utm_term=midnight+cowboy+script+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446174/normal_5fa07ed71c2b3.pdfIn PDF document text
    • https://juxipidupe.weebly.com/uploads/1/3/4/6/134694928/baximiwexo_lolumilaxozab_wesisekam_pabasumidusew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5f95666a6fc55.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/bozaxoronusibil.pdfIn PDF document text
    • https://jajewivazag.weebly.com/uploads/1/3/4/4/134491582/4983939.pdfIn PDF document text
    • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/37961a557b5a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f871123ce082.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/22437e33-dcde-4062-8e30-9a268e6213af/vigokumutegebugurejevipog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aeac60c-c67d-4424-8796-0b9d9adc87ce/35135822229.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/91338373614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76b8e6d-3d9f-408b-ad35-7f7f6bf083ba/61686995804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ad11129-4e32-4408-8dd5-1c76ff04f875/rojebopofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c80ec00-9c07-4fe3-8471-5ab33b23c1ad/42924168246.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_off00027b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B7F 5184 bytes
SHA-256: a201198b0fcafde368bb0e0699d33659221e834d03397d40e834bbca46be1439
font_01_sfnt_off00028d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28D24 10964 bytes
SHA-256: b6184fc15bd98aa0bef9c845f8180487825a679406792f3107e2cf9091ea750e
font_02_sfnt_off0002b153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B153 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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