Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3659c68eae0e51…

MALICIOUS

PDF

78.0 KB Created: 2021-03-11 19:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48912f7832ba54949f12f4e5fc24e632 SHA-1: aaeb46405aa061dcda74ae2b872616a190867fd6 SHA-256: de3659c68eae0e5186b00a73239aec1d525f924660a40b232309b186b9832da6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=cornell+notes+template+middle+school
    • https://cdn-cms.f-static.net/uploads/4418574/normal_601bdf1324b35.pdf
    • http://setifol.66ghz.com/sanyo_pro_xtrax_multiverse_projector_review.pdf
    • http://kewavixim.22web.org/60193465121.pdf
    • https://static.s123-cdn-static.com/uploads/4407070/normal_5fe1d2d63e0d7.pdf
    • http://xukipumalige.22web.org/aleph_book_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4499651/normal_602fcfecaebd4.pdf
    • https://static.s123-cdn-static.com/uploads/4381287/normal_5fe3afddcdc1d.pdf
    • http://wazasutosas.iblogger.org/54194030893.pdf
    • http://depofukug.iblogger.org/30634991629.pdf
    • http://bodegumuxizobi.22web.org/t_reporter_c_ngha_l_g.pdf
    • http://patamekuzon.iblogger.org/hoover_windtunnel_central_vac_parts.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/busutafitufe/90327735858.pdf
    • http://wunilos.epizy.com/do_you_capitalize_president_of_a_club.pdf
    • https://s3.amazonaws.com/nunakixuma/saresiwinikajar.pdf
    • http://toduwez.epizy.com/family_coloring_worksheet_for_kindergarten.pdf
    • https://s3.amazonaws.com/fukepez/53846284496.pdf
    • http://memaded.epizy.com/85298396986.pdf
    • https://s3.amazonaws.com/tawosutosuxi/soundcloud_er_320_bit.pdf
    • https://s3.amazonaws.com/nevovumowa/peg_tube_placement_sample_report.pdf
    • https://s3.amazonaws.com/dorulusof/donald_gould_come_sail_away_sheet_music.pdf
    • https://s3.amazonaws.com/natewared/postcode_lottery_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e40a.bin
9df7c5f35ef974feda22f0c1dc1ca3186d0d581273dcfa1cc811d1f87ef224a6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE40A 5124 bytes
font_01_sfnt_off0000f538.bin
c053ca3214db6d2ab7a6f6e461e3d338560dc3483e208e938ed4c0cbebb85a38
pdf-font-stream PDF embedded font (sfnt) at offset 0xF538 11088 bytes
font_02_sfnt_off00011a34.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A34 4324 bytes