Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e0eb69eec99b41…

MALICIOUS

PDF

72.7 KB Created: 2021-03-13 22:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4281c7b8e997fb5b1d8dfa872e0d1d8f SHA-1: c69cd95d4841b6ac9ddd1a6c90aba32759ee51a9 SHA-256: 00e0eb69eec99b41f6ee068623eeb5c6413ac749a916574b146192483ce43375
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://nipisod.ru/award?keyword=integrated+reading+and+writing+pdf', which is likely used to deliver a malicious payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=integrated+reading+and+writing+pdf PDF link annotation
    • https://cdn.sqhk.co/noxivudeva/EQWichg/jobiduvubawevefiliroxenod.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/O1hahbJ/nojerolime.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/AhhBhcn/pubitadi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2813e0b9-148d-45c8-894b-07da66025068/temple_of_seitan_hackney_closed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9182ae85-0cfb-4548-9c06-96bb57518221/resistance_loop_band_workout_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48b5267-8f02-4449-b06c-08839b01560d/rca_visys_25424re1-a.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/authentication_problem_in_wifi_android.pdfIn PDF document text
    • http://jidodurej.epizy.com/ancient_civilisations_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/events_listing_website_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e663bae0-1f7e-47b5-9bf3-eeb6ea0ba3f3/61553215565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2400dec2-593a-46a9-854c-2277c9e52522/why_does_my_electric_blanket_control_flashing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aca424c-e98f-43c5-a3f2-65ef184b79bf/13920524011.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/7940759019.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/59743591039.pdfIn PDF document text
    • http://wiroweri.rf.gd/97174129926.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/pioneer_vsx-5231_price.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/xibanezodarivikaxumerawem.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/does_walmart_still_do_photo_printing.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_off0000e30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30D 5028 bytes
SHA-256: 44e528e7ee7e2d60e45de190a57eec4bbe768c0429b1b49072a76f1f2c778a03
font_01_sfnt_off0000f44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44E 9752 bytes
SHA-256: 5113f2b5c2cfd9cef9dbc5849cad10b26c7016ff77a196c4e448f54181d000a4

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