Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1ccf96e17a596b…

MALICIOUS

PDF

73.9 KB Created: 2021-02-19 00:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f5804181c389cd4c22b39b5e2dc95b68 SHA-1: 6c1f77715a94057bd136242bb62c47450e7ebb2d SHA-256: 0d1ccf96e17a596be07a8d28818dbc908f38d04934214c3ee8ca270aeb3f9ff1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, masquerading as an educational worksheet. ML and ClamAV heuristics strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site for further exploitation.

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://leonvi.ru/wix?keyword=compound+nomenclature+worksheet PDF link annotation
    • https://cdn.sqhk.co/momujolo/Jji4BnK/hepatitis_a_primary_prevention.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5fee0465a0b2f.pdfIn PDF document text
    • http://potoborotagivud.22web.org/dogejojoziweduvak.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/jejbia5/you_had_me_hello_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464301/normal_5fe695793b92d.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/tuxutedi/59499497307.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/mabezutiwepudemibigiguwan.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/ruwewifedefesitefos.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/florida_citrus_budwood_report.pdfIn PDF document text
    • http://tumofif.rf.gd/6923119439.pdfIn PDF document text
    • http://womopemi.epizy.com/35035074823.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/cabg_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/android_aosp_github.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/bengali_old_album_song.pdfIn PDF document text
    • http://xabenigirujufoz.epizy.com/neo_bomberman_apk_uptodown.pdfIn PDF document text
    • http://valapapiwusujeg.rf.gd/subject_and_predicate_worksheets_second_grade.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_off0000e686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE686 5376 bytes
SHA-256: 36f48e0d88736c19eeb3a7fd9815b241a5c1e168c81ffb66e0d3e5570c528c96
font_01_sfnt_off0000f8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AE 9972 bytes
SHA-256: 13c157c36f72efddf42c6c72645cda4c3fcd56c27e4e095f48b9d6a8121ebff2

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