Malicious PDF — malware analysis report

Static analysis result for SHA-256 89dc68c70566629b…

MALICIOUS

PDF

76.3 KB Created: 2021-03-17 23:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6c0f89312576e7ee5356a36978fd9dd6 SHA-1: 30ef1e6cdf556f0c2f1904652c65249b5838cc2f SHA-256: 89dc68c70566629bf7689d4a30543471a4b1e9370176b2e22f2fd9e9966cc552
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://zajinet.ru/strik?utm_term=cat+in+the+hat+book+plot+summary PDF link annotation
    • http://golomashvanna.xyz/economics_book_in_marathi_free_downloadiyk5h.pdfIn PDF document text
    • http://fanuvazav.scienceontheweb.net/soxawukemaxanudevir.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/buenos_libros_de_fisica_basica_para_secundaria.pdfIn PDF document text
    • http://madewithsunshine.com/esl_second_conditional_worksheetpdlgf.pdfIn PDF document text
    • http://viwavidif.getenjoyment.net/20372493770.pdfIn PDF document text
    • http://roflan.site/axel_f_sheet_music_free_printablep4sqe.pdfIn PDF document text
    • http://vatidenow.medianewsonline.com/69267143566.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://memaded.epizy.com/nobavegarozulusava.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/xuvadidenigogatenikanata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248ad25b-2f34-435c-a5f5-7d7a8bf48ebb/frosty_the_snowman_song_1969.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/us_navy_primary_flight_training_aircraft.pdfIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_2b03d69e25774945859f29afc8df1cfb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/murudute/48593495419.pdfIn PDF document text
    • http://sikadakomog.epizy.com/34894985990.pdfIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_c5a3721260ec441c978c5f44b79041b7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/00f7fe8d-5a1e-426d-bcd6-9f5fd61f9055/large_big_green_egg_table_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/black_and_white_display_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d785f8-f4e7-441e-bb83-d0266fdcdd34/lukopuzirujogi.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_off0000eb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB63 5268 bytes
SHA-256: da2fb99b0143009c3c2d681db6701613de47abafac1724269f957efaca7d230a
font_01_sfnt_off0000fd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD21 11392 bytes
SHA-256: 9c15e2182837c0994cf7b64c15b9040874ca6f35af90d4bfa1d726ff6833e419

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