Malicious PDF — malware analysis report

Static analysis result for SHA-256 aead5f84cb11ca94…

MALICIOUS

PDF

64.1 KB Created: 2021-01-11 18:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6c06e20ffcc67d6acdfdc0a27b380435 SHA-1: 91589b65871656c15875ffba94fd3f8f14dfa699 SHA-256: aead5f84cb11ca94806b45f4633a097186b8e3a2c5ac2a489ffaae78425fc878
154 Risk Score

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 routes users through malicious redirector infrastructure. 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-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://cctraff.ru/123?utm_term=bn59+samsung+01241a In PDF document text
    • https://cdn.sqhk.co/busoleva/F8WiaaD/48280484204.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/1jfjgLj/mugediwumelowapi.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/o5rhcQ6/72423989454.pdfIn PDF document text
    • https://site-1203466.mozfiles.com/files/1203466/slow_keyboard_typing_sound_effect.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/lorifawuvawot/abituriyent_jurnali_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/funejazegotubujeke.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/70283846208.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/tedelimasinakowenan.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/wirazulos.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/english_tests_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/jofugeponoruxepofizorav.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/93638900347.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/21042531036.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_off0000baad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAD 5620 bytes
SHA-256: 3744a4655f49ad21a98e5b4ca71353dd42f265be5bc2328c1b7c1d781c1efb7a
font_01_sfnt_off0000cdcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCF 10836 bytes
SHA-256: c56c7ee812abe4239b38907f4f846bc4f5d76a9875df8803d1338d5ccf16b5fe

Open this report in the interactive analyzer, or submit your own file for analysis.