Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a12f67a6988a90b…

MALICIOUS

PDF

83.9 KB Created: 2021-03-25 10:15:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 17332877d22bf2b6494e9b7109ba69f4 SHA-1: 1e56fcf22de8e7c097faf60363dd040f759e7f79 SHA-256: 7a12f67a6988a90bad6186e70e41eb7f02ba4c427aeea1ef888bb208cd3b6ccd
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into visiting a malicious site. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing or credential harvesting attempt.

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://soxebez.ru/wix?keyword=philosoraptor+meme+origin PDF link annotation
    • http://xerujupuje.sportsontheweb.net/dikifuso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446642/normal_5ffb5f7ec105b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_603620424cd15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387031/normal_5fe5e4fd01fce.pdfIn PDF document text
    • http://datovufes.scienceontheweb.net/matematica_analise_combinatoria.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/vuzisigogifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_6027d9a70e4da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472495/normal_600333e880870.pdfIn PDF document text
    • http://buvevevonukaxe.iblogger.org/51323711235.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
    • http://jetotajasavesi.atwebpages.com/92459429860.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/fesokig.pdfIn PDF document text
    • http://nirufexu.rf.gd/namelegamasexazaj.pdfIn PDF document text
    • http://gaderadosunuse.rf.gd/lcm_worksheets_grade_5_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/34295529265.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/xipuboninudomajawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7abbae5-3da6-443a-b021-5b16986674d6/kiwikunelale.pdfIn PDF document text
    • http://pewesinelukaveb.epizy.com/cdc_influenza_vaccination_information_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/megokelekojafupoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63ea62dd-e116-4ba6-8506-8ca8f55c5cdd/96069381468.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/christmas_dinner_party_menu_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/neterabarivikimavaju.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/kunovujozaboropize.pdfIn PDF document text
    • http://rodesodekisivu.rf.gd/1519262309.pdfIn PDF document text
    • http://luregaw.onlinewebshop.net/abridged_prospectus.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_off0000fefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFC 5024 bytes
SHA-256: 0f87c105ec7d3a3e771c1d7d366068875ded55eca51ccf2f4eebbd54bcde1b25
font_01_sfnt_off00010fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDD 10600 bytes
SHA-256: 28b8b1ce78a6b8dd148729d4a4fa33ece538f069c5a956cfdc4c956fae69037f
font_02_sfnt_off00013402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13402 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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