Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b470efd571e9782…

MALICIOUS

PDF

63.2 KB Created: 2020-11-23 08:20:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c90ae6a6308a380da3ec72596c718946 SHA-1: 11ab2c55e52f8ecc24e1b2f89907bcc2cbca0ea0 SHA-256: 5b470efd571e97824f26484e24b0192f42ed999be487348ab5a21ec6fe6d0f16
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'traffset.ru', which is a strong indicator of phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

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://traffset.ru/123?utm_term=real+steel+atom+vs+twin+cities PDF link annotation
    • https://lepuzabokagat.weebly.com/uploads/1/3/4/3/134333079/3200620.pdfIn PDF document text
    • https://xolitosoxi.weebly.com/uploads/1/3/4/5/134583661/ziwegokike.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/5722051.pdfIn PDF document text
    • https://sujutojulaj.weebly.com/uploads/1/3/4/3/134359820/2544551.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/b2e558f3009.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/91971496299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1fd631d-4135-4206-8cc8-71746df277ed/essays_about_monster_by_walter_dean_myers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1bbff59-4ccc-42dc-8647-5a89de61e730/mofuwiliz.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/a_christmas_carol_script_by_israel_horovitz.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/bluebeam_revu_extreme_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/collaborating_and_partnering_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/61295604765.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/garugoromajenukupujukiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/78451716076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b199356-cd27-4e06-a4b6-8749275b80f9/ultra_thin_laptop.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_off0000bb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB98 5008 bytes
SHA-256: 516e2106c141ebbfa38108df4a37506de144ed3cc19e89ab7a7f6e44bc367c53
font_01_sfnt_off0000ccac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAC 10228 bytes
SHA-256: c2b7e0c89e6eead3e83658cbf526363d7867c59055402dfe35c7ae9cd56c689e