Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0283ebbd76a568…

MALICIOUS

PDF

82.2 KB Created: 2021-03-24 14:59:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 652767217237e56613eddc6c10b5e523 SHA-1: 51c30f556bf406fce6b1cf3a74630a5a0970a4bd SHA-256: 4d0283ebbd76a568da2ebd2b2af1abb49ad415b915e61a3f29cbb6b6217aa4fd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the document is designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dafemum.ru/strik?utm_term=what+the+best+college+students+do+chapter+4+summary
    • https://cdn.sqhk.co/pibegufuxova/mXhduwL/how_to_change_your_iphone_led_light_color.pdf
    • http://jigapenufi.medianewsonline.com/72414231443.pdf
    • https://cdn.sqhk.co/gobajejuz/heibhfw/offroad_outlaws_mod_download_ios.pdf
    • https://cdn-cms.f-static.net/uploads/4476282/normal_601b47de4b899.pdf
    • https://cdn.sqhk.co/zerurukoraju/8RIIUPA/40248747534.pdf
    • http://evakuator-uga.ru/gajeganogujafimuleayzuj.pdf
    • http://reactivascotia2020.com/outlook_calendar_synchronize_androidu1rsp.pdf
    • https://cdn-cms.f-static.net/uploads/4381344/normal_602d352526f85.pdf
    • https://static.s123-cdn-static.com/uploads/4374986/normal_6007e2f6eb8a0.pdf
    • http://zozamowewideno.mypressonline.com/convert_to_word_converter_free_download_apk.pdf
    • http://zawukinaloluku.sportsontheweb.net/8225519881.pdf
    • http://driveformclanemilwaukee.com/kuwesorudu32tv.pdf
    • https://cdn.sqhk.co/bogovureg/Aigiigh/silifujak.pdf
    • http://zabemaladameg.medianewsonline.com/rogabonopanexebegex.pdf
    • http://rivepozepuxar.mywebcommunity.org/finebival.pdf
    • https://cdn.sqhk.co/pozigafo/ig00yJf/choppa_fortnite_season_4.pdf
    • http://xilatotes.sportsontheweb.net/cloudy_with_achance_of_meatballs_2_chester_v_wiki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tazibabebamep/navigators_insurance_company_annual_report.pdf
    • http://jumawivowibeb.onlinewebshop.net/pajit.pdf
    • http://nafaradevofipaf.myartsonline.com/89176141068.pdf
    • https://s3.amazonaws.com/minegikukovel/mibeme.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/lg_tv_bluetooth_remote_android.pdf
    • https://s3.amazonaws.com/xulepiwa/80597219861.pdf
    • http://bigapenegig.atwebpages.com/tiligeruninefabe.pdf
    • https://s3.amazonaws.com/miledu/caney_fork_fly_fishing_guides.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_off0000f4ca.bin
b964a91339401d5d1ceb2c254f090499ae3c16bff7755be0ffd457802567828d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CA 5664 bytes
font_01_sfnt_off000107ee.bin
e90f090ceb9d297c66ae1f258292e2d1a839e5a6ce7d75d14c58d8ebe312361f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 10944 bytes
font_02_sfnt_off00012cdc.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDC 4324 bytes

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