Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4719073ec310e3…

MALICIOUS

PDF

76.3 KB Created: 2021-06-01 18:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c35fb48e4a88f5b1253fa16855e7a762 SHA-1: ea8059cb74bafdec3a3d5da3006ca9347a9ebd43 SHA-256: 2c4719073ec310e3517312ac6f19176d94ea97fd9f9e831d6661b5822061bdd6
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to creating frequency distribution tables, directing the user to an external URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://garglob.ru/pbw?utm_term=how+to+make+a+frequency+distribution+table+with+5+classes
    • https://wapixetisabin.weebly.com/uploads/1/3/4/6/134685373/mijefupegojuviko.pdf
    • https://dewotime.weebly.com/uploads/1/3/1/6/131606762/texude_tuwukujukejuba_lifalot_tiwazafexifa.pdf
    • https://static.s123-cdn-static.com/uploads/4368495/normal_5fdf00ef09315.pdf
    • https://wivapofeselaf.weebly.com/uploads/1/3/5/3/135317026/pigaguro.pdf
    • https://static.s123-cdn-static.com/uploads/4384633/normal_5ffae93187558.pdf
    • https://ruzabipisoxo.weebly.com/uploads/1/3/4/5/134528447/6147655.pdf
    • https://gavuzolarot.weebly.com/uploads/1/3/4/4/134458525/6017422.pdf
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5ff27cd40112b.pdf
    • https://kufifelukabi.weebly.com/uploads/1/3/5/2/135297374/gikipasejuveto-dinenajutusasud-runoriwumagel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kufujibumufa.pbworks.com/w/file/fetch/144412419/quality_function_deployment_and_six_sigma.pdf
    • https://uploads.strikinglycdn.com/files/d2d4b0d1-9380-4e33-b72e-b1313af02868/87617566425.pdf
    • https://uploads.strikinglycdn.com/files/d388aab2-23a5-4bf9-9590-7435ad615268/chilam_balam_chicago_reservations.pdf
    • http://viluxese.pbworks.com/w/file/fetch/144414156/names_for_pubg_generator.pdf
    • http://vajaxasave.pbworks.com/f/wodadoded.pdf
    • http://zewalar.pbworks.com/f/bemimudetemep.pdf
    • https://uploads.strikinglycdn.com/files/a520e2b6-8579-4033-920d-9ad32bdad2fa/91936963087.pdf
    • http://pokuwatosat.pbworks.com/f/download_game_efootball_pes_2020_mod_apk_offline.pdf
    • https://uploads.strikinglycdn.com/files/f9f9413b-8b9b-4075-be35-d6e131fe32d3/how_to_set_up_bt_wifi_disc_with_app.pdf
    • https://uploads.strikinglycdn.com/files/499e40d0-8a75-4a52-8219-9bd222793f7d/the_twilight_saga_full_movie_in_hindi_part_4.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea91.bin
e453f3cb706c283391451201b09270af4ef0e1c2373385ccc2d32c6f93f1733d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA91 5868 bytes
font_01_sfnt_off0000fe78.bin
16327a40e03c4983872db1c29ca41f1de9ff2bab7178130ae91e1cffa59e0d37
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE78 11180 bytes