Malicious PDF — malware analysis report

Static analysis result for SHA-256 32030712bf4ade4d…

MALICIOUS

PDF

129.8 KB Created: 2021-03-23 19:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dce90c9a3c1636cc9f2ba8501b4d48f8 SHA-1: 97cf304e4f6f6ebe8ba96a77a93b557560b58753 SHA-256: 32030712bf4ade4d4103a69d98a8bc740e4634842313837e958b9902539d2bbd
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many pointing to disposable hosting domains, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lead users to a malicious site for further exploitation or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=what+is+public+administration+by+different+scholars
    • http://madalez.22web.org/70094533214.pdf
    • http://magexaxajatadog.getenjoyment.net/auld_lang_syne_sheet_music_piano.pdf
    • http://kevarusakoko.mypressonline.com/how_to_install_forward_facing_graco_extend2fit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kisomelug.rf.gd/93059010449.pdf
    • http://soxomipimumoraz.rf.gd/bd_chaurasia_anatomy_book_volume_1.pdf
    • https://s3.amazonaws.com/rutufokedizon/zojexewu.pdf
    • https://uploads.strikinglycdn.com/files/5fea0362-3feb-46e5-90c7-5a9b69f271b4/scary_movie_ringtones_for_free.pdf
    • http://xefiposokupama.myartsonline.com/12540884985.pdf
    • http://pewusufep.epizy.com/wedding_invitation_website_templates_free.pdf
    • http://fepoxojosatomu.epizy.com/18162182034.pdf
    • http://wobirazegezuw.epizy.com/74840894244.pdf
    • http://xokifenutotumu.epizy.com/chart_of_accounts_report_tcode_in_sap.pdf
    • http://fonimegalidoxu.epizy.com/kiminimitevovinomazediwak.pdf
    • http://xedavabawavela.onlinewebshop.net/6202804202.pdf
    • http://wutejaxevewef.myartsonline.com/2021_poker_tournaments_las_vegas.pdf
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_84a94b690fb84d27a6a1a46adc618598.pdf?index=true
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_c27d9a04b6ad4c2fbf0b5dc4192bd7fb.pdf?index=true
    • https://s3.amazonaws.com/wavunot/35391074444.pdf
    • https://1c2b20db-dbe1-4299-b4c0-f67d595d3b6c.filesusr.com/ugd/e71423_51f04a63d4554a07ae41dec0af25b0c4.pdf?index=true
    • https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_d07f9f10338f48df8a7b763e9af2b624.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cf6cf0a8-7a5a-4f1b-8c47-8b7a65b412e1/95413209996.pdf
    • https://uploads.strikinglycdn.com/files/27f958e2-92e6-4c7f-8ec6-1527a771da1b/wugadudelako.pdf
    • https://uploads.strikinglycdn.com/files/8a43ce2d-5d97-4110-8d7c-9b05bfe5de46/42642978629.pdf
    • https://s3.amazonaws.com/fofeguj/xewotel.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_off0001bc6d.bin
69196428fc7fc5f8c1a16911ef38d1128e8fa59d1694cd8e431f7be0d36bbc14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC6D 5652 bytes
font_01_sfnt_off0001cf86.bin
044574af8b2af8e93662a49b331ff289ac1c9425d8474dbea6d3f2878cc74d05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF86 12524 bytes

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