Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad2a07c96ebb199…

MALICIOUS

PDF

89.9 KB Created: 2021-04-10 16:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b97228b8246e01b659344927fff4af07 SHA-1: ea807ce56be58d32d6822531a7288480bf8be900 SHA-256: 2ad2a07c96ebb19996efa2f7689d22598f0790df2d282bfe39ac2d3774197cfb
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=que+se+significa+estilo+de+vida+sedentario In PDF document text
    • http://discovljzg.fun/why_are_butterfly_knives_illegal_in_australia66n4q.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/ggPiahj/school_girl_ragdoll_simulator_2.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/h7iaHhe/hot_deals_electronics_customer_service_number.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/YidjM6P/crash_team_racing_ps4_gameplay_online.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/dxeheia/butajixad.pdfIn PDF document text
    • http://carluxepaint.site/what_are_the_benefits_of_using_python_programming_languagekhkc7.pdfIn PDF document text
    • http://mediaverifiedbadge.com/namiverigenudelojalis0ehy9.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/gjahgjh/33994581694.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/hcghhja/gijabivenokudusosil.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/V0hfghe/yellowstone_season_3_episodes_how_many_episodes.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/1ohHuNx/nick_carter_masked_singer.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/gjp1Uty/bpsc_63_question_paper.pdfIn PDF document text
    • http://fsfsfd.xyz/66477404452lnkux.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/P91nrha/98707633607.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2e27f1a9-e720-4cc2-a7fa-a948cedc4f6e/mumolasiguxorelepov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9518ff4-3334-475f-ab39-43172ee8617b/gowesotit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943bab21-8f93-4fa9-bdf0-4098a74ca91e/thirteen_reasons_why_season_3_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e3a1f53-9e7d-49e5-b112-e178296d6d50/are_technologies_gendered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72f88576-6c0f-46de-ac66-bf7f64b0e900/dimiwivetututamamaruj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2e991de-1fd7-4250-ae37-77f5eab2fc91/walmart_pharmacy_telephone_number_please.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d5f0f2-3023-4f66-88fa-0dfc2a929de6/how_to_set_convection_mode_in_microwave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3031a336-e21d-4f70-ab99-24b48f78b9ca/37412440370.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E75 5192 bytes
SHA-256: 2da9b2c449d382d1673e349af7da361b87e2704a3955c01f041128af139cca96
font_01_sfnt_off00012033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12033 12924 bytes
SHA-256: 4bb1b4cb36660cabd0057e4ffb240a6cc560d0124f19bf70c8ce7af43bd9d4fb
font_02_sfnt_off00014a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A1C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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