Malicious PDF — malware analysis report

Static analysis result for SHA-256 b236b80341b74fa5…

MALICIOUS

PDF

129.9 KB Created: 2021-03-28 04:18:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9da9e5e11c29d4dab1a8a18bbb1db9b8 SHA-1: e300532a3933fcfaf1596b5ffad1f6ceb25582df SHA-256: b236b80341b74fa5883692134bc9ba77972689630ff79093b1342c49ec75bc5e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, suggesting it's designed to redirect users to a potentially harmful website. The document body, though heavily obfuscated, contains keywords that could be used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dafemum.ru/award?keyword=belongingness+hypothesis+pdf
    • https://sedixiru.weebly.com/uploads/1/3/0/7/130740143/9189077.pdf
    • https://rumevupalod.weebly.com/uploads/1/3/0/7/130739773/15bdd.pdf
    • http://kizefet.iblogger.org/dozikotewete.pdf
    • https://venowogofopow.weebly.com/uploads/1/3/4/6/134611371/zapedikofa.pdf
    • https://zajutarox.weebly.com/uploads/1/3/0/8/130814803/nikilabimijini.pdf
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/3151845.pdf
    • http://gezilobogobig.22web.org/romeziwukitibedulefunole.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b65c7869-41c1-46db-8f76-35d74e446cb9/34922452745.pdf
    • http://ritarejameja.epizy.com/nesiraguxe.pdf
    • http://votunekawajobo.rf.gd/cima_ba3_fundamentals_of_financial_accounting.pdf
    • http://jumivozapiv.rf.gd/ximuxabadotejuxa.pdf
    • https://s3.amazonaws.com/gapivegek/fetawovezugobosexurud.pdf
    • http://nozekesarosale.rf.gd/tally_9_voucher_entry.pdf
    • https://s3.amazonaws.com/pisedij/t_c_full_form_in_medical.pdf
    • http://nuziwaji.epizy.com/ccna_course_syllabus.pdf
    • https://uploads.strikinglycdn.com/files/49d49247-5ece-4e62-b619-0ad07af38ad9/70458458108.pdf
    • https://s3.amazonaws.com/sepawi/ultrasound_guided_trigeminal_nerve_block.pdf
    • http://werodusemojugo.epizy.com/sales_and_marketing_duties_and_responsibilities.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/justification_report_generation_utility_latest.pdf
    • http://digopepu.epizy.com/17126728501.pdf
    • https://s3.amazonaws.com/zobuwubedak/how_to_start_snow_blower_toro.pdf
    • http://daxevetefixidaj.epizy.com/77470646230.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_off0001b38a.bin
305e51cf3fcb5acdc239ee17cc467f0d7faebfdb5e6aaf1d3fca6725b73eb8ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B38A 4936 bytes
font_01_sfnt_off0001c461.bin
743afcacd8774e36889ce6f80a257bd17c2e4ffbcb145ba6fdfc2cbdd4182a61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C461 11580 bytes
font_02_sfnt_off0001ebc3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EBC3 4324 bytes

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