Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c59d7fcd43035e0…

MALICIOUS

PDF

102.3 KB Created: 2021-02-18 18:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 448930e978eee5e774a18c7c43764e40 SHA-1: 2bf172812e102c43dfb1534a66234e4db587d884 SHA-256: 3c59d7fcd43035e023ada8f74bb331b8bd337838d1ce7cfad97549bed0fa01e2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, particularly the one leading to 'druttle.ru', suggests an attempt to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution vector, likely leveraging embedded JavaScript for execution.

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://druttle.ru/strik?utm_term=what+planets+are+visible+tonight+in+ohio PDF link annotation
    • http://shtampshop.ru/sapefakodamaropitey1k.pdfIn PDF document text
    • http://citrus-fruit.space/73585583147nudxo.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/exo_terra_terrarium_lock_instructionsw9pqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413125/normal_602c275d7e3d1.pdfIn PDF document text
    • http://potolkilife.ru/zesitubzkf4.pdfIn PDF document text
    • http://test123test.xyz/3257317033qqk3a.pdfIn PDF document text
    • http://pubgmobiie.com/will_beats_be_on_sale_for_black_fridayeeamb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_601a2d4d10d93.pdfIn PDF document text
    • http://bit7.top/betpawa_ng_apk9gpv8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417329/normal_600148facf298.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/loneminovu/african_dj_mix_song.pdfIn PDF document text
    • http://fifumuwun.epizy.com/lotugenifanokebo.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/spondylitis_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/so_long_niall_horan_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/blu_ray_player_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/jaundice_test_report_normal.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_off000153fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153FD 5292 bytes
SHA-256: 8c04cbca1245bd9a3185ae8424f59bef6c14c1a83f37c4a959e8ce1de21dd7ca
font_01_sfnt_off00016609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16609 11132 bytes
SHA-256: cf5fd85376273125d7ee3f452d80f28920c142ce11f4e962a4f62efd9be02b66

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