Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98e7fe7c390ccc7…

MALICIOUS

PDF

247.3 KB Created: 2021-01-26 01:07:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b8d8b7081ef14c6269ed1d66d2aabadc SHA-1: a32eea79e480136316ca16379c97fcf5933146ac SHA-256: e98e7fe7c390ccc73850ed80083ce49a6399737a53c1fc92b973f84f9aa2da60
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was flagged by a machine learning classifier and ClamAV as malicious. A critical heuristic indicates a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running a payload. The embedded URL is a potential indicator of a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://trafffi.ru/aws?utm_term=autocad+pdf+import+raster+image PDF link annotation
    • http://dazomasuw.22web.org/75363356119.pdfIn PDF document text
    • https://cdn.sqhk.co/sufipuxifemo/hjaifz5/sotukopubupizedekopazes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376372/normal_5fed4f24b797c.pdfIn PDF document text
    • https://tabodixab.weebly.com/uploads/1/3/4/5/134585887/doturimojipewunudeju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413697/normal_60058d5ef0b9e.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/madeira_beach_surf_fishing_report.pdfIn PDF document text
    • https://vabeluzaxudi.weebly.com/uploads/1/3/4/8/134884936/dabuzuzazexafi.pdfIn PDF document text
    • https://tumuzisokume.weebly.com/uploads/1/3/5/3/135351536/8842781.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/zozuxukoxo/dictionary_for_windows_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/vazejorebetawifemaji.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/xixiwobosutatax.pdfIn PDF document text
    • http://zekubegem.epizy.com/jefobibivigaxadegetimuvu.pdfIn PDF document text
    • http://rokalugafujat.rf.gd/aga_crohn_s_disease_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/adrenalina_injetvel_bula.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_off00039245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39245 5432 bytes
SHA-256: 3cf5422abd5e2abfba468a2af52b90402c682a7825378e90a71475321bb81535
font_01_sfnt_off0003a4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4AF 12496 bytes
SHA-256: 241785b798e0dd89547557eee9b25062a4b2ca107ddc36c8abbe522ee69677dc

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