Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0bb3f20c56e1451…

MALICIOUS

PDF

79.8 KB Created: 2021-01-02 09:45:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 089e1639b111f81bbb231abe4dd140f2 SHA-1: fd98545412ae955fa646b80bde4c28b39bd342b6 SHA-256: a0bb3f20c56e1451fcb874d6b9ad824de364a10e53661f41614f05b257e80e60
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a 'PDF_SEO_LINK_FARM' which indicates a large number of external links, and an embedded URI pointing to 'traffnew.ru'. The document body, though heavily obfuscated, contains text related to 'emulator nintendo switch pc', suggesting a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/aws?utm_term=emulator+nintendo+switch+pc PDF link annotation
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/xezatet.pdfIn PDF document text
    • https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/af1bbf0e65bf7.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://s3.amazonaws.com/vososasoxumete/28517342120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73ad6cac-2e04-4ad3-904c-79ecaa8c006b/nimitz_elementary_school_staff.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/xaguben.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/paper_mario_color_splash_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/kiwifibewex.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/87863002647.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/best_antivirus_for_my_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/61077723202.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/bursa_malaysia_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/77970743214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c76ee8-1142-4219-b44e-792dbbb269ed/dokkan_battle_stone_generator_no_survey.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/porufufe.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/lixobaro.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_off0000eca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA0 5244 bytes
SHA-256: 4797d40c642fbf99d87bd51c7ccf95f11068e49e13a8bb5a5eaa31e899d4e339
font_01_sfnt_off0000fe4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4F 11352 bytes
SHA-256: 1521e7bc06ba97404ef816f5d39109f2799cf296ac14a235c0409537f42d9fc3
font_02_sfnt_off000123d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.