Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a3590483221dff6…

MALICIOUS

PDF

79.3 KB Created: 2021-03-22 01:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 711df93563677a10c066266c382b1372 SHA-1: 3f6cde78c5aebd7e7719423095ccecfdf95a2a80 SHA-256: 9a3590483221dff6d8b9197c903efe613ad08aa7dd2634f5fe5d1c435442d0d2
104 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure for a product called 'Vitraxyn'. It embeds a URL pointing to a malicious domain, which is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://seumenha.ru/wix?keyword=vitraxyn+for+sale PDF link annotation
    • http://lakegefufen.scienceontheweb.net/what_to_write_on_birthday_card_best_friend.pdfIn PDF document text
    • http://kugewezebuvigiw.mygamesonline.org/subezo.pdfIn PDF document text
    • http://mexawolin.medianewsonline.com/personal_computer_history.pdfIn PDF document text
    • http://mizafaroremida.getenjoyment.net/4_digit_subtraction_without_regrouping_worksheets.pdfIn PDF document text
    • http://texivej.sportsontheweb.net/74931666950.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/jeduluzu.pdfIn PDF document text
    • http://folejaf.mypressonline.com/no_game_no_life_shiro_and_sora_fanfiction_lemon.pdfIn PDF document text
    • http://milimoje.iblogger.org/simcity_4_download_free_full_version_for_windows_10.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/94270387522.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/26308417435.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/html_templates_view_source_code.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/17422493151.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/bonubiwexagiwo.pdfIn PDF document text
    • http://vububogux.epizy.com/child_s_play_movies_free.pdfIn PDF document text
    • https://178c1879-e916-404b-9861-a2431bd0f83a.filesusr.com/ugd/1aace6_9c2dee3b066a4a8ca0e26ab9f0c03730.pdf?index=trueIn PDF document text
    • https://d56a38bf-d62e-453c-9b5b-5b2fe88aea46.filesusr.com/ugd/359e64_067b4c7f4e094b229463997a4e874267.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/18997690970.pdfIn PDF document text
    • https://acaa17bf-cf2e-4132-a9e9-810271eb8bc4.filesusr.com/ugd/ab5b4c_afb63278f54b4906a525af641186a6a6.pdf?index=trueIn PDF document text
    • http://nexuvojof.epizy.com/virtue_ethics_example.pdfIn PDF document text
    • https://3d5b2cfc-74f5-4c02-8466-0d369b02955c.filesusr.com/ugd/69b86f_658269ccbbdd434989a8b572502f945b.pdf?index=trueIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_5f67c07ef7b94ab29cd54593453a69f6.pdf?index=trueIn PDF document text
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_f8a9e1d0164a44ad89eedcd1524fdc8b.pdf?index=trueIn PDF document text
    • http://vapomogabu.epizy.com/immanuel_kant_categorical_imperative_simplified.pdfIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_f8db3165c27645e89de85e9089d4d442.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D5 4896 bytes
SHA-256: eb34768742a4a740963acffcd150f2cef7469c08251b10ad7f0db729c9383036
font_01_sfnt_off00010a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9D 10956 bytes
SHA-256: ddfe46a5f0ae4b4bf15d5a6f86799d9a9651a7e12e5e9ee245bd68f2e24a0d00

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