Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ffa9b25eb044d1…

MALICIOUS

PDF

144.9 KB Created: 2021-03-19 12:11:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 08c281d082fe74e7223a507860969fe2 SHA-1: 223d404f38d15b3abd90c5ab0873c667b4c7c3b8 SHA-256: 09ffa9b25eb044d181948890d9dd7f8b9bb958085b20169327fa37e4573cfc04
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The presence of an external URI and the overall detection strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/123?utm_term=amphibians+test+pdf PDF link annotation
    • https://cdn.sqhk.co/tobamozusaj/dVnij3q/c_a_s_h_e_w.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/salvation_army_christmas_assistance_frederick_md.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_603fa1d07582c.pdfIn PDF document text
    • https://cdn.sqhk.co/pajazidif/Q9tPjis/youtube_video_downloader_mac_chrome.pdfIn PDF document text
    • http://setafugeridol.scienceontheweb.net/cribbage_how_to_play.pdfIn PDF document text
    • http://autolombardpro.ru/kenapa_file_manager_not_responding_windows_109ze2m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458625/normal_6027e6497af66.pdfIn PDF document text
    • https://cdn.sqhk.co/dasoxitif/XBIGigj/ringtone_audio_song_2018.pdfIn PDF document text
    • http://ductsunlimitedins.com/burmese_days_chapter_summaryqix8u.pdfIn PDF document text
    • http://5-euro.info/maax_spas_jobs5u5ry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369919/normal_5ff9fafc333f5.pdfIn PDF document text
    • http://badge-verification-center.com/bottle_flip_challenge_2_downloadf1epl.pdfIn PDF document text
    • http://procripton.com/125725758052dh7h.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/g7ggJSy/86382760422.pdfIn PDF document text
    • http://dakajak.medianewsonline.com/allahabad_high_court_aro_syllabus_2020_download.pdfIn PDF document text
    • http://myimperfectmomlife.com/liwekalutavexdpsyo.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/rebesudanolo/dolimotesape.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/xekonejetokarijoluk.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/26917574003.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/pablo_alboran_saturno_free.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_off0001f9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F9EF 5284 bytes
SHA-256: 4e1ae52025e689880ea1e89cdcbf0eab7b023305f15089b520c038f4f04a1714
font_01_sfnt_off00020bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20BBA 12696 bytes
SHA-256: 756b484fab6ce90960e79422ea10ebd7568aefd3399b173083fce78d8e31c429

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