Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c060937cb38c985…

MALICIOUS

PDF

85.1 KB Created: 2021-05-23 21:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 88c931707753f7a606a2827cf4aa6d83 SHA-1: 0978f972e76bad4aa486e25723447f83d18eed1a SHA-256: 9c060937cb38c9855820ff4a4f1ae6d5de4da5674f26708f785e16d13bd1100e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a payload or visiting a phishing site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of phishing intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://jottigo.ru/strik?utm_term=bhavans+baroda+worksheets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411683/normal_5ffb75f19c9f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418777/normal_6027476dbdd58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5fd2005368a9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503387/normal_5fd1e28e575db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_601b7fa317035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_6055e11c5fa17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444356/normal_60013371e8be9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fd3b11219d08.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/miledu/hr_director_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/gst_ka_full_form_bataye.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/toxaxasala.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/dmaic_problem_solving_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/ocarina_of_time_n64_vs_gamecube_vs_3ds.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/nonajewebekotiviwov.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/rugaferededizak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/190c6ccb-7769-4901-ae40-0a7c8d616748/kosesivaserizaganasewiwaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0bb252c-909c-4d78-b885-7486774e25d2/rogutalixoduzawilojok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358c3f1c-5b43-4f0f-a755-b63f55cda87d/jigure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e3b8d3-a3d3-4cfc-9c54-7d6444f3525a/computer_fundamental_in_hindi_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af84ffdc-c996-4f3d-9854-828053c9260c/types_of_reality_warping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b640393-ffda-491d-bdf4-0527ce11cbd2/ziramowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5aac1bc-d09d-49a9-b3a8-44bd3cf071e6/71642900167.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_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 5284 bytes
SHA-256: 040007b17779258c27803b43ecd063946a6ea84cfab0e69012e33be0076729e3
font_01_sfnt_off00010114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10114 2328 bytes
SHA-256: 7b03edcf5aadc5f9e14c0df5c440834174a5be9dbf33448231549ca648ee1f62
font_02_sfnt_off00010b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B99 10856 bytes
SHA-256: 461087984a74b9e150be9d90f5cc2eb62b2ef541634c4a67cb842f802cae6d69
font_03_sfnt_off000130d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D0 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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