Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6de41fa2dcb424…

MALICIOUS

PDF

67.5 KB Created: 2021-02-11 13:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1ef2857aef98764200d9d04546526508 SHA-1: b5ca0e52617261c5dd7d3fb4acf2ab72e4af488c SHA-256: 2f6de41fa2dcb424bbcb2ef9a7b50434bb208040c53357fc460dd179a03f7db8
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://maypoin.ru/aws?utm_term=chitralahari+dj+audio+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371787/normal_5ffacd1773e06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5ff5ba86bbcf7.pdfIn PDF document text
    • http://buybritishcat.com/stochastic_calculus_for_finance7ao33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415308/normal_601098b47231b.pdfIn PDF document text
    • http://quickstore.pro/gusivotv8f2v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406806/normal_5fcd105e8dbb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_6007cbbb1ead1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5fcae83c0a7cd.pdfIn PDF document text
    • http://milanbeach.fun/infinite_flight_global_apk_all_planes_unlockedf543v.pdfIn PDF document text
    • http://baffer-shop.space/119336064897fy7j.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/nerugiraxura/91221622620.pdfIn PDF document text
    • http://betiravel.epizy.com/check_plagiarism.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/dozixexofebavomo.pdfIn PDF document text
    • http://mudasaki.epizy.com/38816406732.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_off0000cb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB81 5068 bytes
SHA-256: 7773b437e84fa5c2fd244796edee2d6820369f3013b0daa6ef97457ea86931f9
font_01_sfnt_off0000dcb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB1 10816 bytes
SHA-256: c7966441117dbdd2ef7e8be76a043ad5441bc5bd3ac3dd4773fe213b6a5e53ba