Malicious PDF — malware analysis report

Static analysis result for SHA-256 2812ee29c0ddf1ad…

MALICIOUS

PDF

67.2 KB Created: 2020-11-18 04:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f445c4a612cda8ee144b027cc50d6658 SHA-1: eca5c72d5151af2ad420a79e9015540ee278580e SHA-256: 2812ee29c0ddf1ada6e396b3fa3d6159bda196714ccafeb73e222b49519178c9
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL points to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the malicious URL indicate a phishing or malware delivery attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=formato+de+plan+de+acciones+correctivas+y+preventivas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f8e6eb811611.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/kewakuko/skyrim_braith_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/google_presentation_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/popagexexoza/available_siberian_kittens.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/1106473904.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/23295702838.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/flvto_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gexixixuda/72894791437.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/b._ed_cet_books.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/femogibiladogubufewizuraj.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/backup_android_apps_and_data_without_root.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/xusonigupegunoki.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/pampers_swaddlers_size_guide.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_off0000c986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC986 5336 bytes
SHA-256: cacee2d1c3ddc7c321a7e40c90c4816e8a347eeca940f138323b34d20b3589e6
font_01_sfnt_off0000dba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 10976 bytes
SHA-256: 498276b9f743d4aea33546820ff6c635c862b54065e72f00e408be228e7f92d8

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