Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b5a798f680d505…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 14:55:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 84187535e1db29e013a72f7ca540ef9d SHA-1: 82824de4f888dbbdfe64a7e925392e9e215fec06 SHA-256: 99b5a798f680d505bd9c3f7839aeca02bc2bf4824223b074d014813eefdb3bf5
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The embedded URL points to a site offering a modified 'nba live mobile mod apk' with unlimited money, suggesting a lure for users seeking cheats or unauthorized software. Although no scripts were explicitly extracted, the PDF structure and external URI heuristic suggest it may leverage JavaScript to facilitate the download or redirection.

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://dugedepap.ru/wix?keyword=nba+live+mobile+mod+apk+1.1.1+unlimited+money PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418984/normal_5ffd9d6f6698e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478415/normal_5fefa9783c897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413109/normal_6033020b11eb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490534/normal_603a2bc62edb7.pdfIn PDF document text
    • https://vezafowifav.weebly.com/uploads/1/3/1/6/131637603/3222184.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/iS5dg43/usha_striker_galaxy_1400mm_ceiling_fan.pdfIn PDF document text
    • https://fudukonuxevefez.weebly.com/uploads/1/3/4/6/134606022/3363307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_6033d08310159.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/ZhjmASN/wodosapevimofa.pdfIn PDF document text
    • https://bogewugarut.weebly.com/uploads/1/3/1/4/131483108/sitafu_gekaxega_dudaraxites.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_6032ff12d4665.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5fe4aa614a2e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492593/normal_601f8640e4091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_601db0ef49c13.pdfIn PDF document text
    • https://jetetinabalu.weebly.com/uploads/1/3/2/6/132682142/kalekokawadiv-nasoribizo-jivobeliruzubiw-mozunezo.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/1jggf75/jubiturelibekivove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391037/normal_6037f4618c28e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3C 5248 bytes
SHA-256: 1eb7937497579aa3c2fde44a08287624d8d925fcd0c16d232dc64be7d0f6e9a7
font_01_sfnt_off0000ed22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED22 12136 bytes
SHA-256: b91d134792bbe7d3349c6c2fa9a82253390c8896567916cf1879fd74faf81403

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