Malicious PDF — malware analysis report

Static analysis result for SHA-256 76bd76ef2b60c3ff…

MALICIOUS

PDF

67.1 KB Created: 2020-12-18 09:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 20654dbf5c8b45dae5d3ae28c1acdb97 SHA-1: 60d2ba98049dfa4c73e61ad2b0cd345d82d8e7b9 SHA-256: 76bd76ef2b60c3ff95c2007cc1bbe35b43bd53fc2ddb8a6fb293ba5966d58773
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body and metadata suggest a lure related to a 'Serendipity bible pdf'.

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://traffking.ru/strik?utm_term=serendipity+bible+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490529/normal_5fca9206a3294.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/dynamics_crm_365_developer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/pasezowajodurinuf.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/suddenlink_cable_tv_guide_greenville_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/holiday_extras_competition_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/christmas_maths_worksheets_ks1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc571fc104edf1d779fba78/t/5fd714ee9264095525eba8e0/1607931118881/wugazokimojinitolaveji.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/36919074334.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2d0d9e5c7695ca9a82108/t/5fc564827acac6192a770aaa/1606771842582/a_fine_and_pleasant_misery.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/72903731005.pdfIn PDF document text
    • https://s3.amazonaws.com/timafatafej/graph_square_root_of_x.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/bafavutewefipesut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a039e9fc3622d54217d5/t/5fd00a3a2b932d7d61f871d5/1607469627574/kisudelatexediziza.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_off0000cbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFC 4992 bytes
SHA-256: d6b2b221a715cfc0d58690815fa7d90acea5fde501673ff0f30827112403058f
font_01_sfnt_off0000dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0A 10280 bytes
SHA-256: 5105ce732836fb12efef347ccbf66f6cb95ad8b27e52bea9d975094fcf148a1b

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