Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e849ffc94a7b615…

MALICIOUS

PDF

68.2 KB Created: 2020-12-22 13:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2ac7ecb0f96fb695650dc71cdaa67f50 SHA-1: 263d7f5942aff951f50bae4af0b958582ad602ce SHA-256: 6e849ffc94a7b615110bcf440bb1c1686b765b471322e307a298b161678bd9a1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and flagged by ClamAV as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Ultimate combat kung fu street fighting 2020', suggesting a lure to attract users to the malicious URL. The presence of an external URI and the ML classifier's high confidence score indicate a malicious intent to redirect users to a potentially harmful 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://trafffi.ru/strik?utm_term=ultimate+combat+kung+fu+street+fighting+2020 PDF link annotation
    • https://jelafabonopavu.weebly.com/uploads/1/3/4/4/134443296/xixavola_dogiwugidexod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5fac08422363a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413012/normal_5f95c75a0a6cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405202/normal_5f9a0e4f27d87.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/xurukukiwosibun-mowamuguxa.pdfIn PDF document text
    • https://jexolelogirif.weebly.com/uploads/1/3/4/9/134901145/fesukidiliretuvogam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370555/normal_5fa7d9d5d1cc4.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/gewuwasi/noaa_satellite_status_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b7baf1-5334-4742-9ceb-cd22af1659e5/how_much_do_braces_cost_a_month_in_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/template_for_a_smart_action_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/wordly_wise_3000_book_5_test_booklet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e940bd14ff0dd29cb4d3/t/5fc1b2269d79364840cd748f/1606529586674/30209213241.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a99e8ef7301f8b317e6a/t/5fcf790dba7003536eacc81e/1607432461739/voicemod_pro_free_download_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/90099699170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3e6feb-d2c1-4b6d-9df7-165e32185c43/definicion_de_sistemas_de_ecuaciones_lineales.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_off0000bdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDAD 5648 bytes
SHA-256: e204d76adee308774ab8759f6fdb5a4ac47f9fc66a16f33c8229a47c15440b21
font_01_sfnt_off0000d0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B2 10268 bytes
SHA-256: d096f392b5f14a74fe13f721f46695b10180d6624574fe99df18b1e310aea08d
font_02_sfnt_off0000f3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e