Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe3c17b1f573401…

MALICIOUS

PDF

81.6 KB Created: 2021-03-10 11:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ad10ab344297d8ca1281774d400c48dc SHA-1: 65e217c192de1fc0792fb670d0cd2844c0556452 SHA-256: ffe3c17b1f573401e0e145807441229be12e712284dc685e2a47b6cea1442e89
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains references to 'golf clash club stats chart' and 'wkhtmltopdf', suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/wix?keyword=golf+clash+club+stats+chart PDF link annotation
    • http://laluwaraselolar.mywebcommunity.org/wezujodesurox.pdfIn PDF document text
    • http://vukuradi.mygamesonline.org/nakawosebelarakafu.pdfIn PDF document text
    • https://leketupafap.weebly.com/uploads/1/3/4/5/134527175/fedizatolin.pdfIn PDF document text
    • http://ostanni.fun/86795394733nh6m6.pdfIn PDF document text
    • http://powuvomewekuxeb.getenjoyment.net/the_book_of_nod_download.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/gesinejutuxarola.pdfIn PDF document text
    • http://vuzuwul.getenjoyment.net/how_to_study_for_teas_test_2019.pdfIn PDF document text
    • https://gefivepuli.weebly.com/uploads/1/3/4/6/134620723/ponunedomimupun-dukedoxojepowa.pdfIn PDF document text
    • http://mazipuvaxa.mywebcommunity.org/pujifimimerugaborimoboj.pdfIn PDF document text
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/1643244.pdfIn PDF document text
    • http://dodajavux.scienceontheweb.net/dnd_5e_paladin_oath_of_vengeance_gods.pdfIn PDF document text
    • http://mugukix.mygamesonline.org/canon_mx922_print_head_cleaning.pdfIn PDF document text
    • http://demask.fun/write_thai_vowelsu8pt1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://manosotidokef.myartsonline.com/all_you_need_to_know_about_the_music_business_ninth_edition_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/837ac950-a253-46c0-88ae-64b9bf35dcbd/us_attorneys_office_san_francisco.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/4150960861.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/pabenigogumegujekuxuzug.pdfIn PDF document text
    • http://situwosase.myartsonline.com/66114323839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/379fcf37-ef49-44e4-b5e8-456f3f1bcad6/16033278503.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE174 5140 bytes
SHA-256: 94a2d97ba08d0da3c126f6edbca132dd53f98375f4b62d3e8567dd9fa0f9f913
font_01_sfnt_off0000f2e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E9 1976 bytes
SHA-256: 25ba19f0a4162ed85075bb63632c7c15bf8fa44e699f483dccd13be66c5b78a0
font_02_sfnt_off0000fc27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC27 11932 bytes
SHA-256: 15550bda785a2cf648caef017c2991be3e8da1e71ff2f6a7ef36c21d8c96e228
font_03_sfnt_off0001232e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232E 16344 bytes
SHA-256: f84adfb139fdf49e27485feb0fb92b79055cb8d51cff817362774f5b6e7cd2b5

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