Malicious PDF — malware analysis report

Static analysis result for SHA-256 9599c5961759772e…

MALICIOUS

PDF

101.1 KB Created: 2021-04-02 19:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2d107180d4e91888cf5cdf775370da62 SHA-1: c11a23b843b4865a3bc9e0797fd22cd8ca21e3e8 SHA-256: 9599c5961759772e536cba2cd76dde810ebb7bc55677f0fb493985a4a05c79ae
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-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://bologen.ru/award?keyword=lexical+verb+and+auxiliary+verbs+pdf PDF link annotation
    • http://difuwikikum.iblogger.org/wokujo.pdfIn PDF document text
    • http://fakexexu.sportsontheweb.net/kevikutejuboxapowek.pdfIn PDF document text
    • http://daxamel.mywebcommunity.org/airway_manual_jeppesen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477162/normal_600f64cfb6f06.pdfIn PDF document text
    • http://wimebenese.getenjoyment.net/3074724795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_60353918cbca1.pdfIn PDF document text
    • http://lapiwudoxavov.scienceontheweb.net/59671512285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464323/normal_6051e2ee00d31.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/vakobuvonawitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382972/normal_605562478e7a9.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
    • https://s3.amazonaws.com/xuzed/3rd_eye_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/relative_clause_worksheet_for_grade_4.pdfIn PDF document text
    • http://dimavaju.epizy.com/hampton_bay_e75795_yl.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/15356290033.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/dadinif.pdfIn PDF document text
    • http://zerozuru.epizy.com/bhole_bhandari_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/simplifying_expression_with_exponents_worksheet.pdfIn PDF document text
    • http://bobixupeto.myartsonline.com/jasitub.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/69863135382.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/8653160974.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/spotify_android_folder.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14033 5152 bytes
SHA-256: 47c81b825fc60ac347e2a4e1156f5976e552146349177da01b93a225d56563bb
font_01_sfnt_off000151c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151C2 11440 bytes
SHA-256: 799ee5be6d44fdd1f437e5cdd9c0e00571f94cb755d32a3c4cfa072296128c5e
font_02_sfnt_off000178cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178CD 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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