Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf159bad533ac4c…

MALICIOUS

PDF

74.2 KB Created: 2021-03-18 02:34:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 534301440425eae974c1d9a868410194 SHA-1: 552872fe5f23173c8340d46a3e643533d474cc7c SHA-256: 0cf159bad533ac4c81f94be50544467df0d935270c6070ef17cbbfd143d83051
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The presence of an external URI and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/award?keyword=after+livro+3+pdf PDF link annotation
    • http://hellochildren.online/mebokisuduriy08rg.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/dosalazemiz4d6l.pdfIn PDF document text
    • http://italiahot.space/bawesabutovuwogoxaxupipopa74md.pdfIn PDF document text
    • http://newberginvestmentproperty.com/cuantas_veces_se_debe_cruzar_un_perro_para_quedar_preadaxd2h1.pdfIn PDF document text
    • http://remastacer.com/my_cloud_login_problemsm8w4v.pdfIn PDF document text
    • http://organicnu.info/epson_ex3220_projector_price0n4ac.pdfIn PDF document text
    • http://kungfumalibu.com/82857710338v6gd5.pdfIn PDF document text
    • http://migriruy.ru/bowik982g4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392218/normal_6007344ea7f7b.pdfIn PDF document text
    • http://educationonline.website/4_in_a_row_king_uptodown0pc1p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485450/normal_601b0b743b91b.pdfIn PDF document text
    • http://tehnotop.space/wukajivatogonuvaxodotiwexxrqh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/levovod/the_amityville_horror_1979_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/10514976204.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/20949858532.pdfIn PDF document text
    • http://marabawem.rf.gd/google_analytics_report_template_excel.pdfIn PDF document text
    • http://nilovumilof.epizy.com/reading_comprehension_quizzes_1st_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82919ac6-8069-4642-9c54-cc8ad6e6f19d/70094009052.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/journal_el_watan_alger_aujourd_hui.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fe760f-8f77-4d4d-8c88-91cf6d6d920a/96312982830.pdfIn PDF document text
    • http://kodugexibitomo.rf.gd/43280597573.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_off0000d3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DA 4544 bytes
SHA-256: 8b96b66acf82fe96091cec29eeb626b888b51e6fa7359b45dc3a89a2231ca5fe
font_01_sfnt_off0000e36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36F 13524 bytes
SHA-256: 1d6ccaf0521e9bd24654e041c96204505e78ec58a2b32c9be1734ab44a0ec5ba
font_02_sfnt_off00010c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C43 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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