Malicious PDF — malware analysis report

Static analysis result for SHA-256 429e04ee0ff1d11f…

MALICIOUS

PDF

87.4 KB Created: 2021-03-19 04:36:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c124c7c1d3b3158120bdfbfcc9101fdf SHA-1: a7292e01dfc987d69d3fcb1e32bc310091adc4e6 SHA-256: 429e04ee0ff1d11f9f6fef254869923038e6b8e319664476d9168716304c71e5
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to 'botokaw.ru', which is flagged as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, contains text related to 'clothes steamer' and the authoring application 'wkhtmltopdf', suggesting a lure to a potentially malicious website. The presence of an external URI and the high risk score indicate 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://botokaw.ru/aws?utm_term=which+clothes+steamer+is+the+best
    • https://cdn-cms.f-static.net/uploads/4416938/normal_5fd7628142abd.pdf
    • http://rejawulomov.mywebcommunity.org/wofexukopisurif.pdf
    • https://cdn.sqhk.co/rinezodoniga/eggih4j/descargar_the_world_ends_with_you_en_espanol.pdf
    • http://wipunemobak.mygamesonline.org/what_does_casual_dating_mean_to_a_woman.pdf
    • https://cdn-cms.f-static.net/uploads/4412894/normal_60300111ba645.pdf
    • https://zegosonov.weebly.com/uploads/1/3/4/1/134109065/4073190.pdf
    • https://static.s123-cdn-static.com/uploads/4496389/normal_5fc7f21657c36.pdf
    • https://sivevaredewiw.weebly.com/uploads/1/3/4/4/134464028/sikuwivo.pdf
    • https://cdn-cms.f-static.net/uploads/4387219/normal_601115b0d256f.pdf
    • https://cdn.sqhk.co/tikalamin/bhbPYmJ/49437736281.pdf
    • https://cdn.sqhk.co/motanunika/KgiA3Hs/viwawatirasekiwikexaxozun.pdf
    • https://sufixekanol.weebly.com/uploads/1/3/4/7/134712322/pafapexabegelaxiwexe.pdf
    • https://rubusabulolow.weebly.com/uploads/1/3/5/3/135326577/d631b783.pdf
    • https://cdn.sqhk.co/rabawula/hdGhdgf/easy_diy_wedding_checklist.pdf
    • https://cdn-cms.f-static.net/uploads/4381751/normal_602208ed5f683.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/2d1044b2-1b2d-4bd6-867f-ca68ee38ed39/tetiru.pdf
    • http://zobovobewuw.epizy.com/call_of_duty_full_game_for_android.pdf
    • https://uploads.strikinglycdn.com/files/771ac89a-a735-40ad-97a0-dc1561c74750/75864369802.pdf
    • http://fomabobas.epizy.com/lol_adc_guide_german.pdf
    • http://kewivesoxafa.rf.gd/bivariate_correlation_analysis.pdf
    • https://uploads.strikinglycdn.com/files/a839e681-7496-4399-89f7-3284749fcf34/metal_gear_solid_5_gameplay_youtube.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d56.bin
c1b03aabe8cb4cb1a0f42b561c011eaf7077e6b876f38d6c175a733092206191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D56 4872 bytes
font_01_sfnt_off00011de0.bin
875a1b25305a974cbfa2fb3e98f9723d4181d9b4ef984e21637153627163ad4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE0 10636 bytes
font_02_sfnt_off0001422f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1422F 4324 bytes

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