Malicious PDF — malware analysis report

Static analysis result for SHA-256 2adf6aedd7b092ae…

MALICIOUS

PDF

80.4 KB Created: 2021-02-16 19:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b7dd4dd21032bce5b1d2f5f77d6b1360 SHA-1: e1e4e0ac8e42e70f271b4d2897d46bd9764bf760 SHA-256: 2adf6aedd7b092ae2301c8254c2a0ec3e068de60ae06c027f686f572d936396f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to download potentially unwanted software. The embedded URL and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be related to game mod downloads, aligning with the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=inotia+4+mod+apk+unlimited+money+and+gems In PDF document text
    • http://pifozuvarivin.22web.org/antarctic_treaty_ielts_listening_answers.pdfIn PDF document text
    • http://shoop-ft.ru/any_to_dwg_converter_2018_registration_code96wp2.pdfIn PDF document text
    • http://urro-hu.com/vutofivusafudofapfb44s.pdfIn PDF document text
    • http://faceit.su/jangro_cleaner_disinfectant_data_sheetxr56k.pdfIn PDF document text
    • http://static-start.top/pajigiwitabegifulupovuq4s9f.pdfIn PDF document text
    • http://websecurer.tech/16484029732b33xv.pdfIn PDF document text
    • http://cmbclientes.com/911904714901hri4.pdfIn PDF document text
    • http://romeita.space/livofunalupineyq5l.pdfIn PDF document text
    • http://boothattendant.com/the_chosen_book_movieliprh.pdfIn PDF document text
    • http://googsnat.space/majijekexobuka9q46r.pdfIn PDF document text
    • http://big-ita.space/toguj32o5m.pdfIn PDF document text
    • http://cardioactiveitalia.site/kukofekumadid7wfdh.pdfIn PDF document text
    • http://healthytrands.com/electrolytic_cell_diagram_worksheetqnuhg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/11481071033.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/90627712568.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/84769781214.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/application_for_job_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/77210513393.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0F 2984 bytes
SHA-256: 1c4d6511d754c30e3b43d9d1df0e08c074ad93d9b9307bc920db73703263501d
font_01_sfnt_off0000e8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B9 5376 bytes
SHA-256: 4069df2555956300ce8c375a1a072e6c95637c73b7e09a4b76456ae07fb20a38
font_02_sfnt_off0000fb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB08 10240 bytes
SHA-256: 2405f369b3090bd8ca668d27ccd6e03c7383005b9eb29db41b1503b94e635f57
font_03_sfnt_off00011e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E44 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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