Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ed6ea87675f1f7…

MALICIOUS

PDF

81.3 KB Created: 2021-04-10 04:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9b2b4894561e7ddd2861018c1751f802 SHA-1: 6293b45b679057178e6d6e61d74cada8e5641fea SHA-256: d1ed6ea87675f1f7572ac3767a7d504524e344bdf5fd29cae9988d36518dd5da
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/strik?utm_term=machine+learning+with+python+book+free PDF link annotation
    • https://cdn.sqhk.co/tuparesoxaj/6dGUhgf/79018790691.pdfIn PDF document text
    • https://cdn.sqhk.co/logenuzupug/idaibia/kameworej.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogivotosu/Xggibji/wabatokoragekasifuvur.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/esijgD6/fisapemopewinoranolino.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/cjcmChh/libikagofafixakepiwator.pdfIn PDF document text
    • https://cdn.sqhk.co/jopogoxom/igic4jb/have_to_has_to_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/luginuwi/GkAbgct/56659214859.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/4ghkxic/fonts_for_instagram_app_download.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
    • https://s3.amazonaws.com/bifadiwuwileji/47329254884.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/mfc-7860dw_wireless_scanning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac061441-e74d-4769-ac3b-e74b78486b92/40715922816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39d3e40-6fe8-4bd2-a762-18b2575682e6/97160966424.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/easy_jeopardy_questions_and_answers_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c1043ec-eb6d-449f-a174-e51a89d4f1e8/how_to_cancel_lease_agreement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7602619-d2c3-425d-9869-5e97c60f1259/lepirefamuwemajari.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/49604382149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9850240b-dd8d-4603-9a32-150c46ed92cc/breckwell_wood_burning_stove_model_sw740.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_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 5292 bytes
SHA-256: fb5f8198ad308f1f78f35d53b80428b764e054824a1dda47829c64bf67d37404
font_01_sfnt_off000104df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 10920 bytes
SHA-256: dc32d65b77b7b50944e87727fd0491ef65e3ade07371413c4a0a26a407657988
font_02_sfnt_off00012a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A19 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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