Malicious PDF — malware analysis report

Static analysis result for SHA-256 2954cb8072725bf5…

MALICIOUS

PDF

91.7 KB Created: 2021-03-22 23:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 781939c4e7960986303618508b578d63 SHA-1: ec3df96e1689de05da161f1b0536801f897e20fa SHA-256: 2954cb8072725bf518107a78a99aaba3de33f0874655a0fd11b56d1f9501e267
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'kuzutuzo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Arabic font generator for instagram', aligning with a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/wix?keyword=arabic+font+generator+for+instagram
    • https://static.s123-cdn-static.com/uploads/4420617/normal_5fcaa7ff095d1.pdf
    • https://cdn.sqhk.co/pixazizaze/AKibhcI/vesezozi.pdf
    • https://cdn-cms.f-static.net/uploads/4495037/normal_5fdb6db3f397b.pdf
    • https://cdn.sqhk.co/mibupufek/hejhajc/aws_iot_architecture_diagram.pdf
    • https://static.s123-cdn-static.com/uploads/4472486/normal_6004fa02167a5.pdf
    • http://rigovutamejebum.iblogger.org/converter_arquivo_para_autocad.pdf
    • https://cdn.sqhk.co/pulafefer/J1jgMgf/mountaineering_boots_for_wide_feet.pdf
    • http://kirudikegopoded.sportsontheweb.net/fun_home_comic_download.pdf
    • http://volalagokiva.sportsontheweb.net/pagowureluzaxosutuke.pdf
    • http://juvipozufuxu.22web.org/nifisemaruniroxagafirivof.pdf
    • https://cdn-cms.f-static.net/uploads/4407756/normal_602a34788d408.pdf
    • http://zijaditenup.getenjoyment.net/vuxetirosok.pdf
    • https://cdn-cms.f-static.net/uploads/4377706/normal_605805136a713.pdf
    • http://nemosixumeki.mypressonline.com/ejemplos_de_molalidad_ejercicios_resueltos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc598458-91e5-4c1d-9a4c-0d4f9381d053/choice_words_rhyme.pdf
    • https://uploads.strikinglycdn.com/files/773d5d67-1728-45da-8cdc-368985625eae/the_far_side_comics_today.pdf
    • https://uploads.strikinglycdn.com/files/6973883c-83db-4029-9c06-ef62962542c2/beruropepufi.pdf
    • http://fojigexojapox.rf.gd/46803537656.pdf
    • http://sogivuwe.onlinewebshop.net/complete_meditation_guide.pdf
    • http://mifijikamipupu.epizy.com/bharat_ane_nenu_cinema_hd.pdf
    • http://raziwisubuza.rf.gd/performance_appraisal_process_powerpoint_presentation.pdf
    • https://uploads.strikinglycdn.com/files/37b02604-4427-4fbe-8866-6b44c977c75c/focus_daniel_goleman_review.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f565.bin
a766e5d852ee59e583324c3fbfd04bceae525aaeeccc74a0c15732cb43e3d544		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF565 9796 bytes
font_01_sfnt_off00010fdd.bin
2027ed26c321fd8b94ea52051b0473660490b00a360df54ba5c453852f149922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDD 5300 bytes
font_02_sfnt_off000121cd.bin
60302947536cb939df9d69970064ded9b0c22c9db01d35d8b4b215b490db7105		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121CD 10628 bytes
font_03_sfnt_off0001465d.bin
9561e55a8cdb0062f79750440d867b402ded449ca694011a9c5887cc94335725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1465D 17028 bytes

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