Malicious PDF — malware analysis report

Static analysis result for SHA-256 8443864e133c8346…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 18:09:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ed78dc75df7826e886c405d87966d43d SHA-1: eef67c63e268f0817892d1ee81cf1e7315fba1fb SHA-256: 8443864e133c83467f5e0bdc359f6d538b75c494f9b468d0737f5229dd7d66f0
104 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URL and a heuristic indicating a 'download button' lure suggests a phishing or social engineering attack. The primary IOC is the external URI pointing to a suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=the+collector+2012+movie+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375894/normal_6034f8ab61eec.pdfIn PDF document text
    • http://viputixezererej.66ghz.com/drawing_down_the_moon_album.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482848/normal_5ff5c0958f57a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416151/normal_5ff3065c13508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380675/normal_6001015fb9a09.pdfIn PDF document text
    • http://vodaxuf.iblogger.org/pikenewimuvukukadofusaw.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/jovet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_600dd2377fafd.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/audit_report_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/pewulumugabokapaga.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/52429779628.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/bioenergetics_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/cal_king_bed_sheet_sets.pdfIn PDF document text
    • http://tifijawubizomed.epizy.com/97877471734.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/video_song_app_install.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_off0000dfbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBB 5508 bytes
SHA-256: 7c555bf5b7528a2fb06cd05f7d9d91d41ed5e57f365346c07480362588990ee8
font_01_sfnt_off0000f268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 10236 bytes
SHA-256: c7a76f468028eecebd5bdcea3bb7e22279162680c3f72bd1f6f2e108539d2a7f

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