Malicious PDF — malware analysis report

Static analysis result for SHA-256 96847a9a98acfa7a…

MALICIOUS

PDF

101.7 KB Created: 2021-02-25 05:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 99a530030d3314a63edace6e3f395aea SHA-1: 3c67bd5b2149e064c8ebcb5e82e04a2273f5c39b SHA-256: 96847a9a98acfa7a8d29cca9ffb764186593a2c6199645cda8588697433455db
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that masquerades as a game guide, likely to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure and embedded URI indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=water+homunculus+summoners+war+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403537/normal_600e23ca834d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_601b34dbd5c8c.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/15197005085.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://gamutazuzores.epizy.com/principle_of_creatinine_clearance_test.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/54524783760.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/91652065819.pdfIn PDF document text
    • http://kadekosaraf.epizy.com/67221510240.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/57870506998.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/adobe_photoshop_full_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/a_court_of_thorns_and_roses_recap.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/how_to_connect_brother_printer_to_wifi_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/43263849209.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/yara_international_asa_annual_report_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/vevabekivusim.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/compound_interest_calculation_worksheet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12651 5340 bytes
SHA-256: e3e8c11ba84137a8292697605ac58a7d5d237ab715e1f84bded8103c5a0b42b2
font_01_sfnt_off00013866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13866 13684 bytes
SHA-256: 7819d1b97ebab6f40182dd6fe19ad3cf88eaac1288a37e274b04a4de6a810134
font_02_sfnt_off0001643d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1643D 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_03_sfnt_off00017905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17905 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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