Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ce8fe439790766…

MALICIOUS

PDF

86.6 KB Created: 2021-03-26 05:52:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ced7a56004c620d721961c58c58ca14 SHA-1: 2d3230901256dbfd4853a9a4e8c051a0befd4ac0 SHA-256: 89ce8fe4397907664dd2932da27ab351897996e12297521caed2017ae9d804c6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website with a search query, likely a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wix?keyword=mine+blocks+unblocked+24h
    • http://about-igsupport.com/11_verbal_reasoning_test_with_answerso8vny.pdf
    • http://skout.tech/creepy_nights_at_freddy_su2cg4.pdf
    • http://bristol-yalta.run/mississippi_burning_questions_and_answersy915m.pdf
    • http://rogijowop.sportsontheweb.net/sibeneziziloviditare.pdf
    • http://dusanaputojinon.mygamesonline.org/abide_in_my_word_2020.pdf
    • http://hook-up.fun/mozafatepad32dq5.pdf
    • http://bukobaxaz.getenjoyment.net/rukaranitusujudabisor.pdf
    • http://pufivuziviv.mypressonline.com/applied_science_diploma_question_paper.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/purixifusipelid/chi_ionic_hair_color_review.pdf
    • https://s3.amazonaws.com/bipepezuwed/kizufebiv.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/hsbc_global_research_report.pdf
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_7f803d3dd1974efe97821124d782b34d.pdf?index=true
    • https://528f6e5c-6927-42ef-b7a5-a8f9c349750c.filesusr.com/ugd/07b979_aa0fbdefe47440ea941db3920904de79.pdf?index=true
    • https://s3.amazonaws.com/pululusodogi/wafifokaxizasolo.pdf
    • https://s3.amazonaws.com/tubupejevomo/google_sheets_keyboard_shortcuts_switch_tabs.pdf
    • http://ribaxekag.epizy.com/panasonic_nn-sn651b_microwave.pdf
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_faa0cfe4223c47cda886064c5f2fa99b.pdf?index=true
    • https://s3.amazonaws.com/webipejonavuv/ramujeditalofox.pdf
    • http://zinofamokolete.rf.gd/kusenuf.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbed.bin
fab6177762da18386e75a4a81e90476932de42f5ea29f9805fc63a3996dcde77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBED 5148 bytes
font_01_sfnt_off00010d88.bin
9d18bf1c359982b4b1574008f2f8953db264c6eea89ff7dc07dd856e390913a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D88 12784 bytes
font_02_sfnt_off0001374e.bin
f617d4f31fe7a85aa02db48d5fe8f6c469eb8e7daca9b19cf700654b5afd91e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1374E 16404 bytes

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