Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee09b3e8639c4f65…

MALICIOUS

PDF

75.2 KB Created: 2020-12-07 13:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: df98ced7a765cc4c5c3793836a9da7d1 SHA-1: dc7ec57778feb1f980287d234edd68117f2fae32 SHA-256: ee09b3e8639c4f6578d9f0538c9f805cc9d5a3ee1d0b80596dd73ab774f46099
154 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 'ggtraff.ru'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests it's part of a phishing or malware distribution chain.

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://ggtraff.ru/123?utm_term=alaska+state+tree+and+flower In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5f8df4792f2d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_5fa6f5625f001.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/woxewiwupir/boi_cheque_book_request_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7235687f52b6b817f64/t/5fc223e7f3de5e49b5ace90b/1606558695522/dakota_county_property_tax_info.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06859b83-5104-45eb-a588-220bc86ae9bd/jufexatebode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa01f28-f777-46c5-b351-5ce2451161d1/metex_m-3610_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54bcbfab-937f-41e9-b22a-a1a9cd9350c2/36775438305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a1125af-85d7-436b-9c78-1d829c6007bc/arabic_alphabet_chart_with_english.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/vovibezosexikivu.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/6110138658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d529fe5c-e258-47a6-a2c6-8c752ac835ad/kono_subarashii_sekai_ni_bakuen_wo.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/eid_dates_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddc9b6c1-0c81-4d90-8ab0-ce5e1ee22944/54592289143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6deba8a3-9ffd-4a11-9b0d-130bae4c0318/vipuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d362873e-698c-485c-a2bb-5a5d0bee9508/meragajaji.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae84085bf90c0e029602/t/5fc2fa5fa97599144e5a7a83/1606613601198/muxigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a576be9f-5ff1-4497-a9e9-301734ff6a5c/46302868195.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_off0000e857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE857 5048 bytes
SHA-256: 5d61d2eb3903c5408bb39bc6523b1bb707b9fcdda69342cdcff38c403c801be8
font_01_sfnt_off0000f9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A7 11748 bytes
SHA-256: ac168967d4176f780edec76f2800ad92156f71b76d3ff68f8f17b02d1268b3df