Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfcbf3f3ab90567…

MALICIOUS

PDF

76.9 KB Created: 2021-03-06 13:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: af295056e75de76fd7fb872ea68d1cf8 SHA-1: 48375280c05853b2772cea175d2559a92ced8d7c SHA-256: 9cfcbf3f3ab9056726b51accfdb24935583e2dbfe5026a6fc2524c0b67862062
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attack. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the PDF content suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=terapia+de+parejas+san+juan+puerto+rico PDF link annotation
    • http://zujuzerawijuk.medianewsonline.com/how_to_train_your_dragon_show_order.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/how_much_can_an_interior_designer_make_in_canada.pdfIn PDF document text
    • http://tuzupibu.scienceontheweb.net/92725508829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423752/normal_5fd914dc11d26.pdfIn PDF document text
    • http://paypallsecurity.com/simple_distillation_lab_reportkarfs.pdfIn PDF document text
    • http://metazoaapc.fun/todevebm9dkf.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/56503174639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470837/normal_601b7c4d3d520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_6015f8009dc91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417805/normal_600f7e4809451.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viwuwijagabote.myartsonline.com/8484566585.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/25095507110.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/mefeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9845d3d-82df-41bd-ae33-5d148a61c900/dd_rules_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/origami_bookmark_heart_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/zesorunofadosebefavomik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd680c7a-e626-4397-adf9-2e6787539470/irobot_roomba_960_vs_980_review.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/albion_fame_farming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/chores_planner_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/self_guided_tours_world_war_1_battlefields.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/guramoxare.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE3 5060 bytes
SHA-256: 9c732038d98c8ed6cad7e81ec9b7211e7d59e48157dad62c9be6bdcd1bd0be42
font_01_sfnt_off0000fd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2A 12080 bytes
SHA-256: 3cf6dab7befeb8047ee318e4be5c5b01925c77687b3be407cea9d809ccdc25fa

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