Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bdfa3225be19ad2…

MALICIOUS

PDF

71.4 KB Created: 2021-01-10 06:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6885b1c0d5ef8d0cd7d066023f89ff63 SHA-1: 6c36ecf925de9c1d3223b91283c967f3228aa6e9 SHA-256: 4bdfa3225be19ad2621f416f0a2e6d20f065f14983a10dfa5d8906f5e748f5f9
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/wb?keyword=duddu%20my%20virtual%20pet%20hack%20apk'. This URL is presented in a context that suggests it's a download link for a game hack, a common social engineering tactic. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the presence of a malicious URL strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/wb?keyword=duddu%20my%20virtual%20pet%20hack%20apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489244/normal_5fb61c1bc9ee5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392664/normal_5fc816ac996a9.pdfIn PDF document text
    • https://cdn.sqhk.co/rejibebadit/W2jfPKh/goniriretopegomeve.pdfIn PDF document text
    • https://cdn.sqhk.co/lapitobexeva/jhKhfgj/raxafaketi.pdfIn PDF document text
    • https://cdn.sqhk.co/mifaruzamexu/jDibEji/40449811576.pdfIn PDF document text
    • https://cdn.sqhk.co/lakabarobuk/iihbuOW/loxozanubiwoxevini.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/LicyicC/2078855246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5fd85a85adbc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415291/normal_5fe0f7c6ec60a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5fa158f2ae395.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392667/normal_5fcd612658863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375700/normal_5fc4290cbdc2e.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/bitajemisajoz/nadipirumifo.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/80727481118.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/1698600056.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_off0000d9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D8 5360 bytes
SHA-256: 6082b6db79328e98dbfe1348eb5ac1d5ef9b86eee46c9b0c7ede90be97537eea
font_01_sfnt_off0000ebf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF5 10776 bytes
SHA-256: 52f16bc62c45f3cf973e5166962a45bce4fd96ba1acf7ad2ba813495c999dd5c

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