Malicious PDF — malware analysis report

Static analysis result for SHA-256 315d0756fed3a8b3…

MALICIOUS

PDF

67.2 KB Created: 2020-12-21 05:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 02c0f1d60489fae6dcadf8b831f55266 SHA-1: b408695b50a1f14b78138e9fff9b371d6573c16e SHA-256: 315d0756fed3a8b3d7dc2020f60f1b183340199dac9f7df3a4a0eccae634cba1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=t+rex+game+hacked+unblocked'. The document body, though heavily obfuscated, contains text related to 'T rex game hacked unblocked', reinforcing the lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=t+rex+game+hacked+unblocked In PDF document text
    • https://static.s123-cdn-static.com/uploads/4457008/normal_5fe0104cae8ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387233/normal_5fa8bfefea405.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/68182195-4de8-4c07-b813-c6b379b94a8c/37402235543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d36263b-c066-49ac-a4d6-842e25911a39/80696595978.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd26f1f-3719-46bd-bda5-7bdd1b0f89cd/borderlands_2_nirvana_farm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff8601e-f21f-441e-b2ae-9f738ffa897f/95133060225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ed003c-d8cd-4a32-a831-6c2f4e085ab6/womemaximasenamuwezoxalun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7b8df0-5920-4af5-a5b9-155bfd1f1f95/gimawemusipepanapovola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45749b15-48e1-4be8-ba8f-94d0588cc41b/22140964397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecb5618b-7ae4-479d-8edf-e134cad33f3c/6891437377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fd2e47-6fb8-40d7-b72c-b37dab85b80c/bfs_and_dfs_time_complexity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e18b559b-ad02-4bd5-80b0-e958f33d2436/69302739680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/396cd0d0-d9d8-49d3-8a61-528644788ba9/giruxoxamuvidexutoxegedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91e7715f-e5d7-4732-9119-8005f397d0cb/34687623584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab095cf-747d-4ecd-9952-c51d294907d6/early_college_academy_mn.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_off0000c8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E5 5396 bytes
SHA-256: fd069ead7803275fb85caef78c5e65347ebc056c3aa0523796b53a15aa88ddef
font_01_sfnt_off0000db17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB17 10840 bytes
SHA-256: 4013af38727a21d98570ff163f7347cf22f445adb41c293ceea57afa909559c9

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