Malicious PDF — malware analysis report

Static analysis result for SHA-256 66abb5c677501c3f…

MALICIOUS

PDF

92.8 KB Created: 2021-03-30 03:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26706936f3f6c23866e2e8477e5f0fa7 SHA-1: baeea8529a22379bf441a6723fd69b914637b828 SHA-256: 66abb5c677501c3f671a4b91ae7906adc92b98db7622427fff6494b4a5aa0eca
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of external URIs and a high ML classifier score, strongly suggesting malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are commonly used for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://jumiwimov.ru/aws?utm_term=the+logic+of+sports+betting+chapters
    • http://vubitim.sportsontheweb.net/swot_analysis_sample.pdf
    • http://pupezawat.scienceontheweb.net/snowbear_utility_trailer_weight_capacity.pdf
    • https://cdn-cms.f-static.net/uploads/4444370/normal_60595c85702ea.pdf
    • https://static.s123-cdn-static.com/uploads/4458417/normal_5fcaf6b2e06ec.pdf
    • https://cdn-cms.f-static.net/uploads/4417519/normal_603c7085199d3.pdf
    • https://cdn-cms.f-static.net/uploads/4450354/normal_604b6681ea7b3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/c63d9629-803d-4355-a9f6-d103a2db79be/libro_de_urantia_audiolibro_descargar.pdf
    • https://s3.amazonaws.com/daxemo/demuvonovatumata.pdf
    • http://zogoxuf.atwebpages.com/blender_animation_course.pdf
    • https://s3.amazonaws.com/bufexa/77154941498.pdf
    • https://uploads.strikinglycdn.com/files/0d1018e0-ec8e-48d9-8b21-4f9108ee5788/technical_communication_today_6th_edition_free_download.pdf
    • https://uploads.strikinglycdn.com/files/1e51c88f-c810-4332-b493-c9478c09511e/how_much_is_a_42_inch_lg_plasma_tv.pdf
    • http://jinagafudolugil.epizy.com/dukivajupitakosap.pdf
    • https://uploads.strikinglycdn.com/files/1685e751-c5ed-4112-9f6c-cd3a2017d3ce/mimalexikodigejemuxu.pdf
    • http://kubivakov.epizy.com/53203271576.pdf
    • http://wepaxilex.epizy.com/67780962420.pdf
    • https://s3.amazonaws.com/tajimipojimo/owners_manual_honda_odyssey_2007.pdf
    • https://uploads.strikinglycdn.com/files/4e8702a6-3bee-4fa4-bef7-ddf0104c2702/66772337061.pdf
    • https://uploads.strikinglycdn.com/files/ddd50128-c3a9-4dce-9410-a92445c2eff3/60993816592.pdf
    • https://uploads.strikinglycdn.com/files/54570d21-292a-4bb2-aef5-2f83988e720f/what_channel_is_classic_country_music_on_directv.pdf
    • https://uploads.strikinglycdn.com/files/48197fd5-2cbf-4566-86ae-adc430c8d52c/how_to_get_a_perfect_gre_quant_score.pdf
    • https://uploads.strikinglycdn.com/files/3ec31b0d-8e53-46df-9c31-4ab14da111ba/is_the_kings_speech_based_on_a_true_story.pdf
    • https://uploads.strikinglycdn.com/files/89617f1f-b5fd-4a30-97f5-32eb3660c1cb/portfolio_outdoor_lighting_replacement_bulbs.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107fa.bin
c851b01ec0959a2414ce5950940a90adc088d7f6d04204dafed2a4418af0aa3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 5156 bytes
font_01_sfnt_off0001197d.bin
8fa50f52bd4a55f0aa7d62ee0b7a6f60357bfecb7fb9758d914fb04f24fdf93d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 11320 bytes
font_02_sfnt_off00014045.bin
d6b22a3af5de17498c24f972fbc9500047da5cf9ea19c32be09581fc76eaa380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14045 16172 bytes
font_03_sfnt_off00015546.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15546 4324 bytes

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