Malicious PDF — malware analysis report

Static analysis result for SHA-256 614f779d1a472ca0…

MALICIOUS

PDF

64.2 KB Created: 2021-01-07 20:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: eced10790b7a3ebad7801fdab883c20d SHA-1: eac66c2861bbe57146913f44371d4e77b13feea3 SHA-256: 614f779d1a472ca01e50b154ef657c9d6f9d87d5f8e9314c7574c9f121e1001b
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. The document body, though heavily obfuscated, contains text related to 'Tds challan in excel format free', suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://traffmen.ru/aws?utm_term=tds+challan+in+excel+format+free In PDF document text
    • https://cdn.sqhk.co/nedupugifuka/ghjggIo/johnsonville_pizza_snackers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504568/normal_5fd2f28894921.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/7ThgAgf/19570489977.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376612/normal_5ff52a3da5b34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460954/normal_5ff2e35d816d3.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/mibiwivanetuj/ap_sachivalayam_books_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97bbd86-15f1-4012-a7ba-25d80b9456cc/pixel_art_color_by_number_download_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/54153328514.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/best_android_police_scanner_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/horizontal_balance_sheet_proforma.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_off0000c152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC152 5280 bytes
SHA-256: e5c09ac8ad902b575ae9eafb537c26b9a7d564b8d2da4926e5598d603fc1d303
font_01_sfnt_off0000d321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD321 9744 bytes
SHA-256: f9a8ae0e1d6f56e7ba80ca329a5e9ed71f27bbc64378ba72136dca8efae24018

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