Malicious PDF — malware analysis report

Static analysis result for SHA-256 5882931992355a6a…

MALICIOUS

PDF

83.7 KB Created: 2021-03-15 13:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4aaecdb2cabbd22027bd114910d40ceb SHA-1: 4e7ac6eac9f0f81904fda05547c6b7a50903211f SHA-256: 5882931992355a6ad856c842763905a77200cbf15523164c847289585a2c82d4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://yafferge.ru/123?utm_term=bloc+quebecois+platform+bill+21'. This URL is known to host malicious content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the presence of malicious URLs suggest it is designed to lure users to harmful sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/123?utm_term=bloc+quebecois+platform+bill+21 In PDF document text
    • http://bcpzonasegurape2-viabcp.com/multiplication_worksheets_for_1st_gradekg7n9.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/Y7gejh4/rezenuresarigafil.pdfIn PDF document text
    • https://bozalofagolukor.weebly.com/uploads/1/3/0/9/130969011/xuwepoxenesa.pdfIn PDF document text
    • https://wuxivebumuvarog.weebly.com/uploads/1/3/1/0/131070366/2639886.pdfIn PDF document text
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/6508aa32909844c.pdfIn PDF document text
    • http://newser.site/dtr_format_templatey7czl.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/python_programming_language_book_freerzqvw.pdfIn PDF document text
    • https://metidelesaweso.weebly.com/uploads/1/3/0/8/130813592/9352b8.pdfIn PDF document text
    • http://study-english-04.space/dosaxalolarosutaguxrgenz.pdfIn PDF document text
    • https://pokumowudo.weebly.com/uploads/1/3/0/7/130740164/konarijekag.pdfIn PDF document text
    • http://kersita.space/blackpink_dududu_wapkak3lvs.pdfIn PDF document text
    • http://dkblogin-de.best/rudozogizi661.pdfIn PDF document text
    • https://cdn.sqhk.co/lubigegek/LHgjgjb/us_air_force_uniforms_through_the_years.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/01fc53ba-bd4a-416a-a3b9-ec80a3bd5aea/85897737962.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/sivifegabusaxivonagal.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/big_easy_turkey_fryer_chicken_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6fbbd48-6bcd-45a4-b364-fad07a63b96e/64564683515.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/genagozejosuvumufotez.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/80803012995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62676c3-3dcb-4517-9564-e9ad5c3e096c/jenabewotarinulijibosal.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/add_drop_down_in_excel_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e01d1314-0353-44bf-ae24-97e18c9d7e60/how_to_track_sim_location_in_india.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24A 5660 bytes
SHA-256: 4691e36658719877afd347da19850e449f4e70fdc469afe32d5588ed1c6eace5
font_01_sfnt_off00010581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10581 11252 bytes
SHA-256: 5aa50921d7441ed9a9485fd7df33f56efc56b41f868493e61939ea4349410656
font_02_sfnt_off00012bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BEA 16160 bytes
SHA-256: 53c3ec829963ec5a0af1bff4be2d724acb9959b277e5253d769434e6be684fe1

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