Malicious PDF — malware analysis report

Static analysis result for SHA-256 c692add0ad89bc1e…

MALICIOUS

PDF

87.5 KB Created: 2021-02-26 18:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 46714e5d92aca62f5a93605b8eab5ac4 SHA-1: 1651fced4c783b4a27931c05442ab6a341fd1f72 SHA-256: c692add0ad89bc1e40d67b79038c3ee8e3ff6701fd0ff1142dc571995fb3868f
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating it's a credential phishing lure designed to harvest MFA codes or session tokens. The embedded URL points to a domain that appears to be involved in distributing phishing content. While no scripts were directly extracted, the PDF structure and the nature of the lure suggest it's designed to trick users into compromising their accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=kenmore+he2+plus+washer+f-21 PDF link annotation
    • http://xafopawiki.medianewsonline.com/medozubavezufojaji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368736/normal_5ffcbea3724be.pdfIn PDF document text
    • http://blu-ital.space/246057195183xm5n.pdfIn PDF document text
    • http://goldstein.capital/72885934318mqms1.pdfIn PDF document text
    • http://ttttrrrr.space/4015394789414nss.pdfIn PDF document text
    • http://like-store.site/joligewowazikifovubumugovuo.pdfIn PDF document text
    • http://dostafood.xyz/tap_the_frog_hd_1._8_0_apkrtme0.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
    • http://nabenejajoko.myartsonline.com/the_fall_of_the_house_of_usher.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/cardi_b_money_performance_grammy_2019.pdfIn PDF document text
    • http://pasivete.epizy.com/kindergarten_sight_word_tracing_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/muwud.pdfIn PDF document text
    • http://sokevigaku.rf.gd/hp_laserjet_m1212nf_mfp_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/69020661898.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/will_xbox_turtle_beach_work_on_ps5.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/butterfly_effect_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/luvafar.pdfIn PDF document text
    • http://woxebolinos.rf.gd/99108539698.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/sotikikusisusufiboxelezi.pdfIn PDF document text
    • http://fujatelet.epizy.com/concatenate_in_ssrs_report_builder.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_off00010eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB6 5172 bytes
SHA-256: f5b48627356a3e4163c2ecaf5cfd541ef0ce302f30c0463c55d5ce32ebfb3c10
font_01_sfnt_off00012039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12039 10136 bytes
SHA-256: 1133edb6ffe6b5c3e17f297d6d2ff61f4e0633c98861054a5af6eedf4b3e6f79
font_02_sfnt_off000142e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142E5 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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