Malicious PDF — malware analysis report

Static analysis result for SHA-256 c393cba551f9d956…

MALICIOUS

PDF

68.5 KB Created: 2021-03-25 10:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 086c8f82fd86f7120763801745232a36 SHA-1: 26c4e5ef40e2751a7c5760d16b52d6554637fa4d SHA-256: c393cba551f9d9561b53bb3c640e03b400e6283c4769524c172abc44f7472b73
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page. The document body, though heavily obfuscated, suggests a lure related to a 'Lakers media guide'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/wix?keyword=lakers+media+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452217/normal_6030719f69c4e.pdfIn PDF document text
    • https://gagividezi.weebly.com/uploads/1/3/4/4/134477411/vetinis.pdfIn PDF document text
    • http://wifejopoxakobo.iblogger.org/ibps_online_form_po.pdfIn PDF document text
    • http://wigojomet.22web.org/doparukudozat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480173/normal_5fffd828cc267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446035/normal_5fda2c717d32e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_6010697710d17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fc695fb36c8c.pdfIn PDF document text
    • https://mituzeru.weebly.com/uploads/1/3/2/6/132681412/88a43326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisixapuwalim.epizy.com/kindle_formatos_permitidos.pdfIn PDF document text
    • http://fodimezafizuver.epizy.com/how_to_look_up_drivers_license_online.pdfIn PDF document text
    • http://vorasatijede.rf.gd/konitutuwuxunekofi.pdfIn PDF document text
    • http://mopuser.epizy.com/60_frases_del_caballero_de_la_armadura_oxidada.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/esperanza_rising_summary_chapter_2.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/features_of_sustainable_development.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/what_will_happen_if_i_do_1000_push_ups_a_day.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/pipejalijinabegi.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/grade_10_math_textbook_ontario_answers.pdfIn PDF document text
    • http://dafiwogi.rf.gd/insulated_concrete_forms_house_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/how_to_see_tables_in_word.pdfIn PDF document text
    • http://pirajog.epizy.com/bronxville_school_calendar.pdfIn PDF document text
    • http://sazizonega.rf.gd/37169079155.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/mujizivajij.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_off0000d0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DA 5332 bytes
SHA-256: 33ef256ef7339028a2efb2b19bf0bc3167145cef8d4eba6cfdd8e7101182303d
font_01_sfnt_off0000e2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F0 9864 bytes
SHA-256: a9c59c5caaf5d245b392637e37f2f57a0768c0602d54761445debfad441b7e9d

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