Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2caab092218cc48…

MALICIOUS

PDF

84.1 KB Created: 2021-05-02 02:21:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 164abd086036a18c1e1137ea29cd8eb6 SHA-1: 540a1c915b71bed79d41b0a19da4fa338d79684a SHA-256: c2caab092218cc489c8a5f1601306df95b39b3560f9d18cea0dc98e7948029df
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Pilgrim's progress movie 1978' and wkhtmltopdf, suggesting a lure to disguise the malicious link.

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://nipisod.ru/strik?utm_term=pilgrim%2527s+progress+movie+1978
    • https://cdn.sqhk.co/nupozifulija/gegfwl6/65282596345.pdf
    • https://cdn.sqhk.co/nedovipirumu/igdhgCC/74221558238.pdf
    • https://static.s123-cdn-static.com/uploads/4408197/normal_60074b16e2677.pdf
    • https://tafesexetunikej.weebly.com/uploads/1/3/4/5/134576544/lazilanivof.pdf
    • https://cdn.sqhk.co/sofizagumup/jhhpigv/railway_qr_code_enquiry.pdf
    • https://wibixebaroz.weebly.com/uploads/1/3/1/8/131856543/rufupasajajuxud-mefir-wagotivewagose-kabuvixowikexin.pdf
    • https://sujebufapu.weebly.com/uploads/1/3/1/3/131379792/0c7a9c91cde.pdf
    • http://xesabuzusoneb.66ghz.com/surah_al_waqiah_merdu_perempuan.pdf
    • https://xigakoter.weebly.com/uploads/1/3/1/3/131379919/feae7.pdf
    • http://naderuromopuru.22web.org/lcsw_exam_study_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4403118/normal_5fd27a9653f8e.pdf
    • https://cdn.sqhk.co/miloniwuwave/fjcEkPS/nujipasumojisetera.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/178a5f01-6b20-4ec2-8901-cdc36848297d/48313385559.pdf
    • https://uploads.strikinglycdn.com/files/77d1223f-f7bb-4b21-8e61-350483701340/how_to_get_textured_wallpaper_off.pdf
    • https://uploads.strikinglycdn.com/files/72a69104-3b55-4d1f-be36-6c401e8ba5a1/site_visit_report_format_in_excel.pdf
    • https://uploads.strikinglycdn.com/files/191cd9b7-2571-46f6-a999-df7a07032887/85026312593.pdf
    • https://s3.amazonaws.com/rovuweraja/sibuvoradekesuvup.pdf
    • https://s3.amazonaws.com/gapuruxumeg/39588752761.pdf
    • https://s3.amazonaws.com/tuletivotarupu/artist_statement_worksheet_high_school.pdf
    • http://vurujixeja.rf.gd/carmina_burana_partitura.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f11a.bin
1e8e94f880aae66416bdc8b73bec4712bcb79602264b0ba9b38c6868e5d82917		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF11A 5508 bytes
font_01_sfnt_off000103df.bin
248ab93e76e7e79538d46e3d9998048251e837d704c9182114d4e8c2f7ac56ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103DF 12228 bytes
font_02_sfnt_off00012bc1.bin
4682b72f2afa33b20cf875d84024ffdd6778cb348d5560ed491e7fe37e149525		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC1 16192 bytes

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