Malicious PDF — malware analysis report

Static analysis result for SHA-256 8227e05d55da0999…

MALICIOUS

PDF

72.7 KB Created: 2021-04-09 06:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe618c37803c789c5b3065dd92dc16fc SHA-1: 422a3e298560eceed2b74b78915ab41709433736 SHA-256: 8227e05d55da0999b81b46d5244083d57fc2d031618a624a31f05a63fa998be9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text that appears to be a lure related to '11 minutos ultra ritmore', suggesting a social engineering attempt to direct the user to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=11+minutos+ultra+ritmore
    • https://cdn.sqhk.co/sunomedude/hNhf7ij/xorabenomefenopidaluwilu.pdf
    • https://cdn-cms.f-static.net/uploads/4413866/normal_5fe623ec6b5b3.pdf
    • http://medazuxa.mywebcommunity.org/glencoe_physical_science_textbook.pdf
    • http://fapasevusiledap.mygamesonline.org/nilaz.pdf
    • https://cdn.sqhk.co/kisesawaropo/agchgB2/amidalin_pastilha_bula.pdf
    • https://cdn.sqhk.co/fenazijeguk/gEuhbIx/42434158369.pdf
    • https://cdn-cms.f-static.net/uploads/4457854/normal_606892aae3753.pdf
    • https://cdn-cms.f-static.net/uploads/4466161/normal_60557658ac8e4.pdf
    • https://cdn.sqhk.co/fuvebopeweb/Tijijgg/39504633381.pdf
    • http://rivozuzeno.mywebcommunity.org/belimbing_wuluh_untuk_hipertensi.pdf
    • http://pirunumilusarib.sportsontheweb.net/63724495831.pdf
    • https://cdn.sqhk.co/nuduniguwufo/IshbMDp/general_grievous_starfighter_bricklink.pdf
    • https://static.s123-cdn-static.com/uploads/4415951/normal_5fee8269d2d19.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cf12318a-1984-4b30-8857-030ac57e82d4/decolonizing_methodologies_chapter_1_summary.pdf
    • https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_39df50fc4541440d914bb8c81b7aa484.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a769d079-0a31-439c-b8fa-e21bad8d4c24/does_kfc_still_sell_the_double_down_sandwich.pdf
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_7d6cda634126491bbed169e49fb73232.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e69e9680-4790-4ea6-9c3d-284e90a84e25/vululosuzuwilujemusosuka.pdf
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_63c20ce17a1542a1b602b274e815262b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d18400a1-5a5d-43c8-8471-7d741a53f51a/netflix_dracula_vs_bram_stoker.pdf
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_3b0132ebb42c4d22b60c679e7def6961.pdf?index=true
    • https://3682d434-6e27-4ac8-9ac2-d3ec24fa429c.filesusr.com/ugd/9b5f63_10f34a467d7a41fa8a54bd4ae1fe6e31.pdf?index=true
    • http://tevefetilojas.atwebpages.com/23785860853.pdf
    • http://xowobovu.myartsonline.com/ziwepalemexojam.pdf
    • http://zutugidod.onlinewebshop.net/v_for_vendetta_trailer_ita.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_off0000e0f6.bin
dd71ce5ee59d11e540d2333b9de91193b902ec9fa82b482213d2c930200e8d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 4788 bytes
font_01_sfnt_off0000f119.bin
2132059dbd0d2bc0e5df308d16421565740c100881136bfc63024e02b77676dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF119 10612 bytes

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