Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee4668d772e94f2…

MALICIOUS

PDF

72.1 KB Created: 2021-02-20 22:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d28bfecc20c1d9f64da3ba4e52abc4cf SHA-1: b6ecf3115a81cb6a73cbbd1be41d038d2811da5d SHA-256: 5ee4668d772e94f2ca0120afdf41ee1f8baeb2805e47b86b1e2d5b3c4cffe340
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 high likelihood of malicious intent. The document body and embedded URLs suggest a phishing or scam attempt, directing users to external websites. The presence of external URIs and embedded URLs points towards an attempt to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

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://leonvi.ru/wb?keyword=what%20is%20constructive%20trust%20in%20land%20law PDF link annotation
    • http://gapeveta.iblogger.org/shahrukh_khan_photo_video.pdfIn PDF document text
    • http://store50off.info/how_to_clean_the_primo_water_cooler1x5sk.pdfIn PDF document text
    • http://pukazabix.22web.org/basic_instinct_2_sub_indo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383921/normal_5ff4ccc8d03b3.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/batiku/fundamentals_of_computer_networking.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/60792242108.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/25330436170.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/closed_syllable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/dispute_letter_to_credit_bureaus_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/22867998988.pdfIn PDF document text
    • http://zogutofarori.epizy.com/eduardo_galeano_poemas.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/subway_surf_hile_apk_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/guided_imagery_meditation_scripts.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/8696191734.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_off0000dd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD83 5192 bytes
SHA-256: ce2c167a82abb6da8401691246bf52b1b372d5c21b406ea5bf5fffc3c8bb7692
font_01_sfnt_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 10568 bytes
SHA-256: cddcb0b710f70803d86089c77f3fde49b4260d393938f49c671483e214ba924a

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