Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9fc85f0d88dd1f…

MALICIOUS

PDF

77.2 KB Created: 2021-03-14 11:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 3d52567272f5a0b571e0d123d84dbd89 SHA-1: 06bf3505c98596a09f4c63a621b71134c796013d SHA-256: ba9fc85f0d88dd1f2641976655191b9d62eee8925e4db7e2f345d3b4722eb0e1
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 malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to a "Karazhan heroic guide", suggesting a lure to entice users to click 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://lozipotod.ru/wix?keyword=karazhan+heroic+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489988/normal_5fee6ba23514a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_60142d4061165.pdfIn PDF document text
    • http://loxokunetuladi.66ghz.com/marobem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jexititojule.rf.gd/building_specification_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709a55f8-cf45-4b9f-9a59-2f0907a95271/how_to_limit_google_search_results_by_date.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/aesthetic_gif_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933196d8-59ce-4cfb-aa25-e6af6f0c4d3a/what_are_the_core_brand_values_of_google.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cfa4d56-4f55-4f5f-803d-877f2e46b7f1/xazekowituzudanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a51874be-ece8-4145-8111-e0bf4c657177/hbo_the_leftovers_plot_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5c86c63-0451-419e-a6a0-1def4584b216/how_to_undo_page_break_in_word_2007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ca84a9e-e75b-4a4c-b303-2a7d1c445c97/how_much_does_chick_fil_a_franchise_make.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/notepad_format_java_code.pdfIn PDF document text
    • http://guduzazuki.epizy.com/xovew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3583f9-3f58-43d2-aa21-5cb1388a5ab7/xufususiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a79709e3-be0d-4f34-9fd8-c126f3212c2c/titus_andronicus_a_more_perfect_union_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1edab7e3-553e-4691-9db9-10d600701896/iso_27001_versus_soc_2_type_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215bd348-5a38-4fe2-955e-8d946e6d62d7/benovewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9947a863-a2e2-498d-918d-1d8b7689cd10/what_does_mental_stamina_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84d29e9-f314-4896-8363-08c8f5cbfe0d/dell_optiplex_780_display_drivers_for_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/008b9917-9e83-4e11-90e6-cdae964093bc/lixifapimuvobewojufi.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_off0000f228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 5008 bytes
SHA-256: 131bf6b1406d0d52d2475ec511e2a75aa54ba2bb0af7b5af400400ac958c6845
font_01_sfnt_off00010337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10337 10624 bytes
SHA-256: c4e39d917fe8e44528e9b0fb06097d6f630d242a3dfe952a051c8d058dbda470

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