Malicious PDF — malware analysis report

Static analysis result for SHA-256 0150064957f4ad6a…

MALICIOUS

PDF

83.5 KB Created: 2021-02-15 18:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e10bcc0c8724570d2ff76f9a185a1e48 SHA-1: d174e96d222a2970918870df5b914546c552148a SHA-256: 0150064957f4ad6a063a83741cc4aca752c22b77c2ed0be2eba628fc5ce926cb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a PDF phishing trojan. The embedded URL, 'https://jottigo.ru/strik?utm_term=how+to+replace+a+lost+snap+card', strongly suggests a phishing lure related to card replacement. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=how+to+replace+a+lost+snap+card PDF link annotation
    • https://cdn.sqhk.co/nuvexajamu/ghcO4ii/62603717996.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/ja1hihe/debakomevope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fcea981e89fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_6009e01aae014.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_600ddf4b1a905.pdfIn PDF document text
    • http://toxebugusopasur.22web.org/86720933354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_601dd5b1e58a7.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/1widLib/stair_runners_carpet_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/AifzgjC/22878608810.pdfIn PDF document text
    • https://cdn.sqhk.co/segenapiza/ibRgeFJ/4_pics_1_movie_cheats_level_78.pdfIn PDF document text
    • http://lumolowopixu.iblogger.org/cartesian_spherical_and_cylindrical_coordinates.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/feseni/chemistry_textbook_grade_11.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/goludanulabojokine.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/pefikufazuwetowolini.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/65898104587.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/76696623648.pdfIn PDF document text
    • http://mixomexazuvoxod.rf.gd/91495220558.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_off00010abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABF 5120 bytes
SHA-256: 6fc5120d1858ace784b42983900d107e22a972d0f43d359b2c7a8210837a10ab
font_01_sfnt_off00011c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C40 10740 bytes
SHA-256: 979774504d5ce05837270f4d19fb5ab6aaab44ee25dba97ac2a0b7dceb80298a

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