Malicious PDF — malware analysis report

Static analysis result for SHA-256 117f8d15e2425210…

MALICIOUS

PDF

81.4 KB Created: 2021-02-08 11:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 55854e77354eba1f3be356e6588f405b SHA-1: baa96fc18f0971102c0a93a2219c1ce1c73c6d7e SHA-256: 117f8d15e2425210b70b85e9f59fdc86c8806c06e2c38dd094691cdd744ac26b
162 Risk Score

Malware Insights

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

The PDF contains embedded URLs pointing to known malicious redirector infrastructure and multiple other PDF files, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to game hacks, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=westland+survival+hack++pc In PDF document text
    • http://itdomen.fun/wagijosujenudedufinawihob.pdfIn PDF document text
    • http://jewlgems.com/21841132019ktxn6.pdfIn PDF document text
    • http://carbackseat.site/free_font_generator_scriptz802p.pdfIn PDF document text
    • http://navalny.design/harvest_market_champaign_sushi8ixjl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415537/normal_5ff600fb434ba.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/EZidjiq/ultimate_epic_battle_simulator_descargar_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/felodunom/ljbLidB/37218219365.pdfIn PDF document text
    • https://cdn.sqhk.co/vutexexukus/8ttjhji/butisetemojagegawefeluwow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446401/normal_5fe179f96215b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416669/normal_5fcfa1b21c51b.pdfIn PDF document text
    • http://hellesypakk.online/96407310522a8syw.pdfIn PDF document text
    • http://unreguezff.rest/699188724851c7j8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459788/normal_5fe94e8d601f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393364/normal_60014cb059ec2.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
    • 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_off0000ecd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD5 5300 bytes
SHA-256: 7fe2226fb90a502d70ac521f653ad32f2be96fc92cc81310c5d0d3c469e36a93
font_01_sfnt_off0000fee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE2 10688 bytes
SHA-256: f0f820d504d8cc2201fa7af5c8a70c6c800d9be7e8eab0400de29327a1a9a8a3
font_02_sfnt_off00012373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12373 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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