Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a625f70cb56f5f…

MALICIOUS

PDF

77.5 KB Created: 2021-04-15 18:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 225cb1963f3645d4d323b1aebae3d59d SHA-1: 10a9f8feee445ca9f2b8833a283de709b43117a6 SHA-256: f3a625f70cb56f5ff42c58b23518c3236554ced833602b70d609d6afc6e1ff7f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=my+passport+ultra+is+not+detected PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479902/normal_6017676796025.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/bp1jjor/70382642064.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/OVigRjd/xmeye_username_and_password.pdfIn PDF document text
    • https://cdn.sqhk.co/fomanazoravu/ngq3jqF/50621450013.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/c2oHKhi/cafe_racer_1000cc.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/IhhtOgg/project_schedule_monitoring_tools.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387417/normal_6060265a2abb2.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/c7Ej7QW/pafidetoforimosow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_60162924d261a.pdfIn PDF document text
    • https://cdn.sqhk.co/temetixufuxi/unjiIgi/garden_flags_warrington.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/cNjgekN/71725270974.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/ia2CUgh/73690579174.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/ChJqhfz/maxeruzigijuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/2363942445.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/arduino_uno_wifi.pdfIn PDF document text
    • http://lakugarim.rf.gd/bulats_test_1.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/82986790018.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/icps_scheme_guidelines.pdfIn PDF document text
    • http://mapureju.epizy.com/alternance_informatique_brest.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/limunoparuvetuzofovipamer.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/boulevard_of_broken_dreams_karaoke_free.pdfIn PDF document text
    • http://kipixuge.epizy.com/xexekatigoredur.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_off0000ef9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9C 5176 bytes
SHA-256: 62bcc9c528e53efd0626aedce9ca1592d3ebb8bfdf8f17252a36f8d14ba39e76
font_01_sfnt_off00010156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10156 11052 bytes
SHA-256: 9e3243492fdb78a8b960342d1ee7ecd9869a6d64c9ae6966744d25c28a75cd3b

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