Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17b4453449c1399…

MALICIOUS

PDF

65.0 KB Created: 2020-11-09 18:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6a7a2b3bcc691c597443699485b34107 SHA-1: 7b0c616881cad12ba9cbbf65e61c9c3d4ffdce45 SHA-256: c17b4453449c13998e33687681ee674d4bda88886bee2cbab552960e840f0a30
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website related to 'happy wheels 2 unblocked games 66'. This URL is flagged as suspicious and is likely used to deliver a malicious payload or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://trafftec.ru/123?keyword=happy+wheels+2+unblocked+games+66 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403534/normal_5f9f8114b78a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416301/normal_5f9b04785622d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f9b789bbc572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402940/normal_5fa41a66b8582.pdfIn PDF document text
    • https://xasatodifugo.weebly.com/uploads/1/3/4/4/134439571/e7f05.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/dc786c94-f059-4cf3-aaea-3da7fda87862/63590263656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22c5d24f-56e5-4f92-8fb5-93e66514af34/92139107172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a812e0b-59c1-459e-a5cd-828b0d55f272/99344922063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af869fe-bfde-4bf5-a9c6-953e3702064f/nupusuvira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff9da5b-1e6c-44d6-a7c2-61c4eed05e8d/weed_eater_featherlite_sst_25_hp_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b715856-4112-4dc2-9764-15d4efde9627/sterns_introductory_plant_biology_12th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/103f84a2-e5eb-4e3c-9420-1bdfbfeb763b/36748951376.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_off0000bf80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF80 6036 bytes
SHA-256: a9d672162dcf76ade4f75d636310c15f76b9edfdbe08f50b0f3c390c1be40d0e
font_01_sfnt_off0000d3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FC 11024 bytes
SHA-256: 5fb20f64671d7994cfb521cb48b8fb78bc6ef6b3adecb0943ae5e32245f89930