Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64a6bafd0b518df…

MALICIOUS

PDF

90.9 KB Created: 2021-02-07 14:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 340b192c334004deb9daaf030e9e9e8e SHA-1: 9efdaf7eaa6bf79866db7746f8383f9e35364500 SHA-256: c64a6bafd0b518df9441bcabbd8d9acd84f2d8d569993d6206f37d75c4de9db9
96 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or providing sensitive information. The document body, though heavily obfuscated, suggests a lure related to 'Hogwarts hymn sheet music violin'. No scripts were extracted, but the presence of external URIs and the phishing nature of the document strongly suggest an intent to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/aws?utm_term=hogwarts+hymn+sheet+music+violin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495264/normal_600c19d2e2114.pdfIn PDF document text
    • http://rentline.pro/berne_levy_physiology_free_downloadmquae.pdfIn PDF document text
    • http://naykaryadom.fun/kibizimuwipebasalap8wc8o.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/monocot_and_dicot_embryo_diagramrf5d9.pdfIn PDF document text
    • http://goromeo.club/bohemian_rhapsody_piano_solo_sheet_freeuavr2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367296/normal_5fce3fcaf1191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419822/normal_5fcc6f3c37e18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_600f3bcfeadcd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/kapezexen.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/galacticraft_mars_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/vatapuxutaxagamemirim.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/puzzledom_mod_apk_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/penoralu.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/conference_poster_template_psd.pdfIn PDF document text
    • http://rexerikilo.epizy.com/38061040880.pdfIn PDF document text
    • http://kozifina.epizy.com/botello_elementary_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/pulmonary_embolism_guidelines_accp.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/cholamandalam_general_insurance_claim_form.pdfIn PDF document text
    • http://muvalinifotu.rf.gd/vascular_malformation_knee_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/51732523354.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_off0000e984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE984 5428 bytes
SHA-256: 92e37e009e21b8454047178ed166dddff6fe5b4eb753ecd5146e371d5c7aa240
font_01_sfnt_off0000fbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF0 11648 bytes
SHA-256: 893feacedd37545b69fc32b1af9e06b220e3ac98a00826e2e82a92f45ed1a308
font_02_sfnt_off000123cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123CF 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_03_sfnt_off0001393a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1393A 11772 bytes
SHA-256: 8f231287220e71301e420dce8d9765fb99704369d47d2b331eb372272efdbec5

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