Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba72d2c690273592…

MALICIOUS

PDF

76.9 KB Created: 2021-03-24 04:59:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f19541e91426ca110981e7c16801a3c SHA-1: a9a5046c3e86436ba42e15463e902bfdf431b868 SHA-256: ba72d2c690273592396545aa251965424d8cc73d2c58b88e3f2ff3a27d5c07ad
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to 'https://midufefew.ru/wix?keyword=climate+zones+worksheet+middle+school', suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, appears to contain metadata related to the 'wkhtmltopdf' tool and a date, indicating it was likely generated programmatically to host the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/wix?keyword=climate+zones+worksheet+middle+school
    • http://sovolox.getenjoyment.net/acca_f2_question_bank.pdf
    • http://reduslim-officialsite.site/57228157535mxnj9.pdf
    • http://nubuxeki.scienceontheweb.net/78121543914.pdf
    • http://nonretloli.site/zelujikadoguzebivujinugo1b9bs.pdf
    • https://cdn-cms.f-static.net/uploads/4417526/normal_60216dcb53c9c.pdf
    • http://cosmosqrab.online/44547584489zg11i.pdf
    • https://cdn-cms.f-static.net/uploads/4385038/normal_603132e64accd.pdf
    • http://sopisafexuj.sportsontheweb.net/how_does_an_llc_get_paid.pdf
    • http://lenugaguv.medianewsonline.com/dijames.pdf
    • http://vorgazme.com/how_many_quarts_of_oil_does_a_2001_honda_rancher_350_holda7kwh.pdf
    • https://cdn-cms.f-static.net/uploads/4458849/normal_600c55c770ffc.pdf
    • https://cdn-cms.f-static.net/uploads/4491148/normal_5fd80a0f46c98.pdf
    • https://cdn-cms.f-static.net/uploads/4458148/normal_6045e8deea2a9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://9b704b87-3668-414c-a24e-b30400fe0e33.filesusr.com/ugd/51c472_5941b2d257eb4f15bbbcbc3718c56fb1.pdf?index=true
    • http://gubawakelu.onlinewebshop.net/betalactamicos_2020.pdf
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_5fdf444784524576aad999c2c6e246b0.pdf?index=true
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_3aaf3ed0f9004ecf89a82a76e5d6f712.pdf?index=true
    • http://zizenatoxu.myartsonline.com/bozipizozisuvarokav.pdf
    • https://s3.amazonaws.com/gedimuta/amman_songs_tamil_wapwon.pdf
    • https://s3.amazonaws.com/zafaronivaj/cravings_chrissy_teigen_best_recipes.pdf
    • http://vedixemalirugi.atwebpages.com/human_body_systems_quiz_with_answers.pdf
    • https://s3.amazonaws.com/nuxepiduded/wumenitipuzevaxuvijumolen.pdf
    • http://jowokepo.atwebpages.com/ar_15_scope_vs_iron_sights.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_off0000e269.bin
35635ca3dd52e38564a2dcab6fc65ab06acf2ac95fe2f5d33d62084f74fb22c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 5196 bytes
font_01_sfnt_off0000f3f4.bin
2595b7782c4e3853110bb5caaddfad4956c14f1b6b101523b5ab9c20748b9660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F4 10548 bytes
font_02_sfnt_off000117d2.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117D2 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.