Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b1f8f8faf5f5cc…

MALICIOUS

PDF

70.4 KB Created: 2021-04-05 19:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8782acc54650df5bfc3450147cbc9a82 SHA-1: 96e98d0c4566c1c32827a4df12875d1250c8b3e6 SHA-256: 25b1f8f8faf5f5cc46ce61fa5c834440930a77a56a6f02a7e7165806c0a68863
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The document body, though heavily obfuscated, suggests a deceptive pretext related to a menu, aiming to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=cedar+and+stone+urban+table+menu
    • http://giveaway2020.info/super_dancer_chapter_3_ka_winner_nametj5ok.pdf
    • https://ruwaxejitoxa.weebly.com/uploads/1/3/4/9/134902813/fovuwesawudata.pdf
    • http://homeolimp.com/dias_feriados_para_el_18_de_septiembre_2019mhbar.pdf
    • https://cdn.sqhk.co/mepofazobi/YmXQfnx/vipevamopagepejomukuk.pdf
    • https://cdn.sqhk.co/fusojafiza/hbi9gf7/kuxam.pdf
    • https://melejorun.weebly.com/uploads/1/3/0/7/130775242/numumulemobe.pdf
    • http://nejevefivi.mypressonline.com/79727604487.pdf
    • http://jafoxidulez.mypressonline.com/describing_trends_vocabulary.pdf
    • http://jebonefawudo.sportsontheweb.net/susarowuvokarodez.pdf
    • http://roboludawu.mywebcommunity.org/b._ed_cet_syllabus_in_marathi.pdf
    • http://lazategomid.scienceontheweb.net/26695695720.pdf
    • https://detubutil.weebly.com/uploads/1/3/5/3/135348338/zitogodi.pdf
    • http://vewefoma.getenjoyment.net/69228129548.pdf
    • https://bamewubi.weebly.com/uploads/1/3/2/3/132303354/5eb3eeff1232.pdf
    • http://vzruvayarttraff.xyz/ketitobasokijoruwonesuxorl5zen.pdf
    • http://deliwubavamir.mypressonline.com/15186533381.pdf
    • http://esclick.pro/99117965908c1cln.pdf
    • http://sasegotib.medianewsonline.com/backfire_a_collection_of_caribbean_short_stories.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gegilifopom.myartsonline.com/coordinate_geometry_ebook_free_download.pdf
    • http://lipabarud.atwebpages.com/27923684705.pdf
    • http://valupakukav.myartsonline.com/broncho_vaxom_sache_bula.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_off0000d693.bin
e0bf727355611c2b2bcc52eecf50a137c4ff5fe6e583842424a2bd68246677e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD693 5016 bytes
font_01_sfnt_off0000e781.bin
83538ab5dc5047a32edff7fb3a1548a31d9f8dfe7b3723387ff9ac78eac72c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE781 10968 bytes

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