Malicious PDF — malware analysis report

Static analysis result for SHA-256 91ee16649ade69c8…

MALICIOUS

PDF

50.6 KB Created: 2021-03-07 12:16:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4f7e392e69e61cd959510c081622ac39 SHA-1: 5ffd73893a9de7e87d24913b5ee39ec9ffdf0cc1 SHA-256: 91ee16649ade69c8360e68e5ae8b065ff8106c85463d45b7b6c7027e47cb8275
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/aws?utm_term=how+to+use+a+convection+oven+to+reheat+food PDF link annotation
    • https://cdn.sqhk.co/baruduwege/VMogcih/wokigoxasuvokowu.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/Widgigk/sunday_school_songs_telugu_mp3_free_download.pdfIn PDF document text
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/gimevob-mirobom-dofobaku.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/ictsjd3/pixel_running_out_of_space.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/idGKUjf/juzijeforobekopikos.pdfIn PDF document text
    • https://kibewibur.weebly.com/uploads/1/3/1/8/131856655/dajebunezonar-bajiter-vixarupiwegaxu.pdfIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_541390c18d4c474e985bef570a83c69b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dagasopones/bilebaxutalogavavif.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/excel_exercises_for_students.pdfIn PDF document text
    • https://1e8c0764-4a0f-46ab-84a2-5f63a8a44928.filesusr.com/ugd/6a0acf_a07ebe52ac8442048d9854824d08ae19.pdf?index=trueIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_66feb0fcabd7406c91576fc29655c7b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/99717480773.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/83787522429.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/fallout_shelter_special_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/piredatevexanurif.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/content_calendar_template.pdfIn PDF document text

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