Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b866d42c002bd6…

MALICIOUS

PDF

68.1 KB Created: 2020-12-21 23:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0001c65f3e6b8f37fbc4cbcb12ff55bf SHA-1: 296549b09551dbb603414fa1d4c1315f4b5f27cb SHA-256: 32b866d42c002bd626a84004c56582cdd0420e26a27308a5f39e2ffa7eb46f5e
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 critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=bleacher+report+cleveland+browns'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution 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://gettraff.ru/aws?utm_term=bleacher+report+cleveland+browns In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424689/normal_5fbe78796d61c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_5fb2accc67b5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492240/normal_5fa972162e448.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b1d850a-bf04-4f57-92f1-ad2c96c65a24/91188195301.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce1e1ae5a13e2fea6e261f/t/5fd627a4d654060362c00ebd/1607870373601/fertilization_in_angiosperms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a61616c-7126-4acc-a49f-4535134a3a3b/59690505626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ac8ceb-b435-437d-a5a6-84b1a31772ed/wapaxetizitodopovila.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/rixeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3afbbde-1d20-49ba-8dc5-70c8497364ac/9219536632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76b199c-db89-4fd4-8627-368483a480e1/xodobikatuvokivuxaxugov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64c582e537a05ef2dcca0/t/5fcafdd01880ce05e842b9b4/1607138769518/thorogood_portage_boots_for_sale.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_off0000cc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC70 5500 bytes
SHA-256: 533b6c2bf020f64687d1067487406ae5d875819ff04de25629799ff29de751b4
font_01_sfnt_off0000df2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2E 10348 bytes
SHA-256: d0f47155c7e903b1d7acc222201455107758d7fe3b34c8a56120d0e94ae67c41

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