Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7b45edef67bd03…

MALICIOUS

PDF

75.5 KB Created: 2021-04-21 12:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c0f731c08be898629d695d724a39fb SHA-1: 97515e40d06aae043ca0c13a1bf36d1e04797280 SHA-256: 9a7b45edef67bd03ff8475cc39acadbf8016099ef3431bcdf411997d84b886e3
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. The embedded URL `https://ponafet.ru/strik?utm_term=why+would+my+water+softener+full+of+water` is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or redirect users to malicious content, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=why+would+my+water+softener+full+of+water
    • https://lujotasapamuxa.weebly.com/uploads/1/3/0/9/130969194/kazul.pdf
    • http://nashremont.site/castbox_app_apkjqt5a.pdf
    • https://cdn-cms.f-static.net/uploads/4413457/normal_6064474c840a9.pdf
    • https://cdn-cms.f-static.net/uploads/4365599/normal_603bb0a87e3b7.pdf
    • http://constructionhouse.info/4267132230976dj5.pdf
    • https://rogixatig.weebly.com/uploads/1/3/5/3/135323026/48819e1bc.pdf
    • https://sevafigetof.weebly.com/uploads/1/3/4/9/134902911/sujipesukobeza.pdf
    • https://jebadufe.weebly.com/uploads/1/3/3/9/133997269/22380.pdf
    • https://babiweperes.weebly.com/uploads/1/3/5/3/135347107/rovazemogugokag.pdf
    • http://rasprodavaika.ru/mawilukaxezerufabimepozi7ekhu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bed42407-618d-4ef2-82e2-9e05eb4753a0/80299064071.pdf
    • https://uploads.strikinglycdn.com/files/56614d1a-8c12-47ad-b5b7-4881e7433c1f/air_force_1_lv8_white_midnight_navy_silver_snake.pdf
    • https://uploads.strikinglycdn.com/files/19d3e106-598e-45db-b527-09c730602a26/25360963193.pdf
    • http://bageradafasuk.rf.gd/black_and_decker_grass_hog_spool_cover.pdf
    • http://zovawawopo.rf.gd/pegifekomod.pdf
    • https://s3.amazonaws.com/fizaxo/opportunity_analysis_canvas_third_edition.pdf
    • https://s3.amazonaws.com/wifukedot/bhojpuri_video_picture_movie.pdf
    • http://funasuruwet.epizy.com/bixoviritowexon.pdf
    • https://uploads.strikinglycdn.com/files/0dd6a060-db5e-4a10-8d9c-91b4800002c5/what_pizza_place_has_gluten_free_crust.pdf
    • http://kamiwivexa.epizy.com/evento_vascular_cerebral_hemorragico_tratamiento.pdf
    • http://tokilofi.rf.gd/10324877547.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_off0000e93b.bin
5c9d4ed1cde6480ff4bfec7cb34624103a3d816e050b821cb37a15d19e9360b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 5356 bytes
font_01_sfnt_off0000fb5b.bin
2d5515ec0a2f78bf8032801ffed0e59071fb478a132630444782e3cb34e0a628		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5B 10896 bytes

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