Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadc4670f642a68d…

MALICIOUS

PDF

83.1 KB Created: 2021-03-14 01:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 587f59b30f0a880ce0ea791b92181fb4 SHA-1: 5cba8c9da33cf1d6183e02a08766a88fd15996ae SHA-256: eadc4670f642a68d20c93faa40870392d7b4b79f1a884f968998aee14de700c6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document exhibits characteristics of a phishing lure, specifically a browser extension or update installation scam. The presence of numerous external links, including one to 'mezovuduw.ru', suggests an attempt to redirect users to malicious sites. ClamAV detection and ML classification further support its malicious nature, indicating it likely serves as a dropper or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://mezovuduw.ru/wix?keyword=happy+wheels+swf+indir
    • https://cdn.sqhk.co/vagofedewat/jc2gigc/vocal_trainer_sing_better_full_apk.pdf
    • https://cdn.sqhk.co/dubikewe/gj1IDic/48548613947.pdf
    • http://wosutopanoba.mygamesonline.org/meaning_of_sustainable_development.pdf
    • https://xakolino.weebly.com/uploads/1/3/1/4/131453712/feeccc38723e3.pdf
    • https://pivazadigemeza.weebly.com/uploads/1/3/4/6/134642233/9b31b355a12396.pdf
    • https://cdn.sqhk.co/puzadowoke/4ha4gd7/word_search_printable_free.pdf
    • https://sibibogug.weebly.com/uploads/1/3/5/9/135990875/1347851.pdf
    • http://roboludawu.mywebcommunity.org/what_is_the_rarest_hair_color_with_green_eyes.pdf
    • https://cdn.sqhk.co/xanovixewin/bgjhfZn/25749020559.pdf
    • https://cdn.sqhk.co/bidelefo/Kig5pib/lirokeduten.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/masevewi/37704172412.pdf
    • https://s3.amazonaws.com/jutenojamega/mac_os_android_studio_adb_path.pdf
    • https://d52369c8-37f2-40d9-9d5f-d682b3b4a2e4.filesusr.com/ugd/6d5a7b_c2a5bfcca1594fc2b1f2626fe9c0b215.pdf?index=true
    • http://jalijoruki.atwebpages.com/how_much_can_software_tester_earn.pdf
    • https://s3.amazonaws.com/fixararololu/62846925149.pdf
    • https://s3.amazonaws.com/rudelazifizuvo/property_tax_return_punjab_self_assessment_form.pdf
    • https://s3.amazonaws.com/dobesogum/ansys_spaceclaim_user_guide.pdf
    • https://s3.amazonaws.com/gelawiweza/diablo_2_assassin_skill_guide.pdf
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_035e79542488497b8363817797d1cd9a.pdf?index=true
    • https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_461680deaf38414ba1a209867746d6c1.pdf?index=true
    • https://s3.amazonaws.com/dazinibonofobi/abcd_malayalam_full_movie_free.pdf
    • http://tizexazebubo.atwebpages.com/megajarisegek.pdf
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_8ffedddaf1114d40a73f05598c17b3ea.pdf?index=true
    • 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_off0001016b.bin
60e79ded11c0447a802ffb694e984f155ce074c81cbee74bc1ef3889bac54363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1016B 5284 bytes
font_01_sfnt_off00011375.bin
a5b48039b98f6c069396cc4009411b9fc96a6dfc24830940e734d2e84dc68b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11375 13528 bytes

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