Malicious PDF — malware analysis report

Static analysis result for SHA-256 17799b05901bc0e9…

MALICIOUS

PDF

79.4 KB Created: 2021-03-24 04:05:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: edd51602a79324f23ef8f4e435d7b6e3 SHA-1: 74d9d2224f8c4300a2ea4fb81e77d6ef1dded96c SHA-256: 17799b05901bc0e99f5a4aa1b7f2af2b0c57cdb1daa0ce3744a7b2fc23f8c93d
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 0.9998

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://bologen.ru/123?utm_term=activesheet.+shapes+delete+all PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373522/normal_5fee0908445ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_603030fc5f98a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501962/normal_5fd79cdc76ec5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473926/normal_6059da18a1985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412396/normal_60543a98e3093.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370319/normal_60035dbcc4e59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419412/normal_5fce2973388c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_604d9db77b122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447271/normal_602550926ce1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481695/normal_600f4614bd28e.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://uploads.strikinglycdn.com/files/e59e55c4-ef58-4101-90a8-372f0b5b3b5b/59938043025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8271508-677d-486d-b318-38def6ff3719/what_is_the_true_nature_of_god_according_to_the_old_testament.pdfIn PDF document text
    • http://ripofuxi.rf.gd/how_is_gdp_measured_quizlet.pdfIn PDF document text
    • http://gotuziput.epizy.com/bavivedap.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/company_bylaws_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/43197169735.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/playboy_meme_template_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/auto_clicker_automatic_tap_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/67617622589.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_off0000e522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE522 4716 bytes
SHA-256: 3a1a4d849d5ae0bce648a61465b944ffabd624dbd093b366bfd518c195f10130
font_01_sfnt_off0000f535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF535 17036 bytes
SHA-256: 01a267cd01f5278b38136504d32065149250bcd2bd4e32c87bbca16f8bdebca5
font_02_sfnt_off00012200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12200 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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