Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26967d4e47b84c9…

MALICIOUS

PDF

97.1 KB Created: 2021-02-27 00:26:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e586f0196fe9779809a77d453c7439d9 SHA-1: 15a590242e45505b64966d9f95b2e569b1b98fdd SHA-256: f26967d4e47b84c98c4c9992b7dc4e1e00acb7249dd4eba83d6468992cdefdd8
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1534 Credentials from Password Stores T1056.004 Web Browser

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing lure. The heuristic 'SE_MFA_LURE' indicates the document is designed to trick users into providing one-time codes or MFA approvals, consistent with credential harvesting. The embedded URL points to a domain associated with this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=how+to+learn+coding+online+free+quora PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5fc6967a1dc94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426954/normal_602b2eb73a4e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466135/normal_600bf154ccdc4.pdfIn PDF document text
    • http://padigixatobezu.22web.org/autocad_tutorial_videos_free.pdfIn PDF document text
    • http://filokozi.iblogger.org/genie_wireless_keypad_work_with_chamberlain.pdfIn PDF document text
    • http://wofixizufiw.22web.org/usb_2._0_ethernet_adapter_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/39738151670.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/paradise_lost_book_1_in_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/15305656372.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/jakonotilazalogifisevosuf.pdfIn PDF document text
    • http://wafovon.epizy.com/math_transformations_activity.pdfIn PDF document text
    • http://rapudipawuv.epizy.com/mathusee_geometry_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/89974925798.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/evaluation_report_sample_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/volleyball_game_app_free.pdfIn PDF document text
    • http://zotomamomi.rf.gd/farmall_super_a_12_volt_starter.pdfIn PDF document text
    • http://wobudesupak.epizy.com/free_falling_bodies_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/case_information_statement_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/53957037951.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_off000141a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141A0 5188 bytes
SHA-256: cfa37ec15e3bb742886c0749ed78fac32731b9257496adc028e443843eb90bf5
font_01_sfnt_off0001535e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1535E 10412 bytes
SHA-256: 71b82d0fe34063fbdf8d4474c30ea433d0e4113b06d35ab3d29cc6351bdf035e

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