Malicious PDF — malware analysis report

Static analysis result for SHA-256 12475fba99c2151e…

MALICIOUS

PDF

73.1 KB Created: 2020-12-14 15:58:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9314cb9534b52d417d3e43d4ac50ceab SHA-1: 5dae1631dea7a7c6e034198fe1c77e2edfec2c70 SHA-256: 12475fba99c2151e6bf92ebea16ca5aac3843e20aaa53c2be54a5e8f3be8a1ef
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=voot+app++colors+kannada+bigg+boss'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/aws?utm_term=voot+app++colors+kannada+bigg+boss In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383574/normal_5f8ed24bd330a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427528/normal_5fc3f3f5231a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc570c5104edf1d779fad1f/t/5fc71757a907d7439cd318c3/1606883160524/11195297947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81fd5d4-e07a-4953-88c8-6a3f54403533/lion_beaver_otter_golden_retriever.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/dokoxidi.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/d_d_3.5_action_points.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac79814-8765-4598-8521-0ad7332bf485/99380961766.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc394bee2fce462bc9ccb38/t/5fcf2c0b68c18617d40c46fc/1607412747702/stickman_rope_swing_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eb27f7cf8c75402b0337/t/5fc4b55ee18c5c478e90252f/1606727006527/memupejot.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64bd4084698658e8310f1/t/5fcc5435978da30c56f34d15/1607226423191/pitzmaker_for_apple.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/letterhead_sample_text.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/baahubali_2_telugu_songs_starmusiq.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_off0000d3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A0 5412 bytes
SHA-256: 5829f261a148a2a457c13ad7d3b1c1f38e7ed37e8c1f0c0cc7cd97eeeb2cde74
font_01_sfnt_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 2592 bytes
SHA-256: 7b17c8095861172e1d8867d177323506e742dc10a26088c57eaf7b0db5e102af
font_02_sfnt_off0000f0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 11392 bytes
SHA-256: d51ca8820f0e1fa33228e7d126fec308f138da50dc4451ceb90960c9d5d2faa5

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