Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f9a4b234e005e3…

MALICIOUS

PDF

74.1 KB Created: 2021-01-20 02:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0e3fc7b1ad7ae732fb26fecb876a6c63 SHA-1: 2ad1dc79d581e3661ea69f0cbcbdfed7d07c6fc4 SHA-256: 70f9a4b234e005e3a8850be8fcce10e43c3a9d8c968c736899481ea992c56483
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to deliver a phishing lure or malware. The document body, though heavily obfuscated, contains text related to "Invicta watches battery life", suggesting a phishing attempt to exploit user interest in this topic. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=invicta+watches+battery+life In PDF document text
    • https://static.s123-cdn-static.com/uploads/4459791/normal_5fef9b1cc4bd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444853/normal_5fdca7011f1c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368238/normal_5fe550b7300d4.pdfIn PDF document text
    • https://cdn.sqhk.co/tadanopi/z1o5jh2/logo_quiz_game_level_20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381976/normal_5fc3b70eec6e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5fcd572d8f407.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maviwapas.epizy.com/resident_evil_4_hack_apk_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/canvas_cv_format.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/8196195364.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/web_design_invoice_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/fubuwosumepub.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/low_cholesterol_diet_sheet.pdfIn PDF document text
    • http://volajigatume.epizy.com/crash_course_us_history_4_answers.pdfIn PDF document text
    • http://molutuganum.epizy.com/11085484464.pdfIn PDF document text
    • http://jipokogave.epizy.com/gajomudiwatetidawugo.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/investigative_report_template.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_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 5300 bytes
SHA-256: 641e75adf30b79d7c2ce2a16500f97fdbf679fc463df0de9d5c31c2a832fed57
font_01_sfnt_off0000f75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75F 10448 bytes
SHA-256: cca77d2f9865463afa9e8bb3bf415087c9b17bcc04c0315d3eb360fa06243ff4

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