Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fe634a8686a6e4…

MALICIOUS

PDF

64.4 KB Created: 2020-12-08 13:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 68f29f1cffbcacbf0dc2f8dc2c8d11a0 SHA-1: 15a95179bcb40ae6e3c6f1172d009589c50b9d88 SHA-256: 98fe634a8686a6e4ad51651253f40e63de01ebc7e565a776a578f22c07f0d8a9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering a download for 'Mame4all apk full', which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious resource.

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://traffset.ru/strik?utm_term=mame4all+apk+full PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491665/normal_5fcaad8be377f.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/kezemiradigu/tikulaminesewip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95699cc5-f0b6-4bc1-ac0e-4844462571de/wugoxofezimetaseb.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/tuninitulalotin.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/accident_report_trenton_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gofasomasetunixidi.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/73635490858.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a252f9866f3fd2f4236e/t/5fc5e807145a8629dc7db06c/1606805511949/social_security_rochester_ny_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf6b8df8-466d-4300-9403-3184213b9f3a/93870546978.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe05ea9d79364840555f8b/1606288875505/vizadozir.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/nufimigataj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d67b8ef7301f8b106140/t/5fc1b63b145a8629dcf0cb5d/1606530620826/2738074391.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/clinical_chemistry_book_download.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_off0000be49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE49 4928 bytes
SHA-256: d0be2bfd12c7379934f9f017295efc1fe8ae5b628bbfa69713336f87678b9104
font_01_sfnt_off0000cf19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF19 11500 bytes
SHA-256: d862f9c01d281d51d342888281c7fc5046cf4b886d2bdb915b7f5ecb60223453