Malicious PDF — malware analysis report

Static analysis result for SHA-256 9977e1837565752d…

MALICIOUS

PDF

196.4 KB Created: 2021-03-09 18:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1f84bd0023685422d6237bbd63f96c93 SHA-1: e6ddb8feed21f7f08bc3bf7682d784bc69d99fc5 SHA-256: 9977e1837565752d22c720896a511ef9092d4dc432bc4ff00312e7f398559860
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'bologen.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'Duchess of Malfi'. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://bologen.ru/123?utm_term=duchess+of+malfi+text+pdf PDF link annotation
    • https://cdn.sqhk.co/vidikusupegu/xghfhcO/24763879232.pdfIn PDF document text
    • https://cdn.sqhk.co/rigepasemapa/i9ozCy0/my_talking_elephant_game_download.pdfIn PDF document text
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/pejubabatugozepeg.pdfIn PDF document text
    • https://gikovasedubum.weebly.com/uploads/1/3/4/5/134507074/vekavilirisoruvuwow.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/3Cbknih/devaju.pdfIn PDF document text
    • https://libexezelidod.weebly.com/uploads/1/3/1/4/131454359/9107699.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_7b45c01dd45d462ea3db4b91a41e47f9.pdf?index=trueIn PDF document text
    • https://944456f3-75eb-4cd6-bbfd-656b3713ada1.filesusr.com/ugd/2c8d66_d4ec0595f9f047a0aad9a1e6aed1af6c.pdf?index=trueIn PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_e4d3d924f9df4b7bb699cac12294117b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/ielts_academic_speaking_part_2_with_answers.pdfIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_ca7c67a4e17f47bbb9f8b28e64c7cefb.pdf?index=trueIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_8f2a01c7a4f3415aa6aaff97b820fe78.pdf?index=trueIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_25d460096b934b89a111f1e14d227d45.pdf?index=trueIn PDF document text
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_db579340aaa7417fa9e3a1f8d7f6f9ac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/aylesford_school_sports_college_ofsted_report.pdfIn PDF document text
    • https://ff06b2c9-6223-4357-b4d5-1bf3807c749f.filesusr.com/ugd/717131_85bf3031c99842578521b5aad9f763f9.pdf?index=trueIn PDF document text
    • https://a4edf7fa-b057-49b5-8014-e5fd436fbef3.filesusr.com/ugd/c8b2c5_5ac77cd67380418faf9969f116e7ffa4.pdf?index=trueIn PDF document text
    • https://55baa078-60bc-47c9-b367-cd657ea690b0.filesusr.com/ugd/7ae8b3_6d712cc4b9c5491ea758118c7e224d31.pdf?index=trueIn PDF document text
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_9f139fd1f5fc425f8580916550ffccf2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sewamos/baptism_certificate_format_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/room_on_the_broom_character_templates.pdfIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_1e34127c8819435ca8efc3360d46a5dd.pdf?index=trueIn PDF document text
    • https://19a39513-20cc-49d1-a75c-e30ce0314142.filesusr.com/ugd/f99735_a316d52fddd04052a8f0d47e785119f1.pdf?index=trueIn 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_off0002ccf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF2 5368 bytes
SHA-256: ae832f6bda23fb7ea00256bd379764690e18fbbbaef71e0c5e719d77577f13c4
font_01_sfnt_off0002df1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF1A 10772 bytes
SHA-256: 188c0169bd1caf882070ab4dc7552bc21e2de5b9ae9e6aaf4a1efe6a12e75505

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