Malicious PDF — malware analysis report

Static analysis result for SHA-256 9325fc1e748df40b…

MALICIOUS

PDF

77.2 KB Created: 2020-11-13 13:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ecff03a30d15e6e732fc636ee8b4c10a SHA-1: 9da4a5f6526d18c4a3403eda6ca71b12c2e2bd82 SHA-256: 9325fc1e748df40b67b50eddd9ca70f5987444a86a2848d398bdb3b6768c1682
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 0.9996

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
  • 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://traffset.ru/strik?utm_term=sugardoodle+primary+singing+time PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f9e3a1744ee1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5f8a1483379c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f8d34b588d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f95847770455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_5fad4e7d17541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f875f7c10e00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5faac37071b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f89fbf96bd9d.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/zosevid/bemorarajafomuxusegit.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/tibizababajup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0adba2-47fe-4e7e-9502-489d00eaa7a0/59539097880.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/architectural_lighting_design_gary_steffy.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/human_sexuality_today_9th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/863990478.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/sipobom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e989455-d34d-471b-bd4e-4e170ad28770/jacob_the_great_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/pamifurakutonedikakipinu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34D 5484 bytes
SHA-256: 1e806fddc9fc2afc0e5b043c9ce64366e992facc6a82c65deff41add030c216e
font_01_sfnt_off0000e5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DD 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000ee6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6A 10160 bytes
SHA-256: c4a397be3b813ee17041682ce453c09527d792c2120add7a031f7b3a20ef7ffd
font_03_sfnt_off0001115f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115F 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15