Malicious PDF — malware analysis report

Static analysis result for SHA-256 b441cddc29740ef6…

MALICIOUS

PDF

77.0 KB Created: 2020-12-16 17:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c0653e7ba04a7a1a4aaca35b7dff47e9 SHA-1: 7802cbf0c58357be88422ad2f77fc357b52578a5 SHA-256: b441cddc29740ef63ce009989f957ea83af542a522b1ff6fd3c907022520858c
162 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 'https://gettraff.ru/aws?utm_term=template+analise+swot+ppt'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious link and the document's classification suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=template+analise+swot+ppt In PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/9544597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5fcb738ac71c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_5fc039e002998.pdfIn PDF document text
    • https://kujugozu.weebly.com/uploads/1/3/4/6/134660126/davozuderedus-bovemi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e99a0a2757459be2ef6a/t/5fc3a7464f983757204f831f/1606657863888/wazufepenibukipik.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf9529ee0f32b871982ea/1606285653790/truth_subjective_vs_objective.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c666116eb00e3c4b5099/t/5fc2eee97acac6192a21a9c9/1606610675618/anais_anais_perfume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f87a1819-ec4a-4123-9808-c38d9e807ed1/61767518569.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29eebabaecd33182d3b3b/t/5fc9c3d76a94db17e490a66f/1607058402333/free_themes_streamlabs_obs_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50b14104edf1d779bbfda/t/5fceba702ff6e37f9dee86b5/1607383668963/20586438100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90aafef0-5929-49e1-98dd-25f8fa7cdd38/55599074801.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffb332bbd740658015355/t/5fc1849bcb3e0f57718996d0/1606517923527/singer_201-2_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d90f8e-d39b-48b0-a8c9-3f18bb95225c/cast_iron_smoker_box.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1412bcd1e280355d6a3a9/t/5fc4417f4f9837572066b8e8/1606697344354/dewalt_4200_psi_pressure_washer_parts.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD423 8044 bytes
SHA-256: 036aa65c5d8a234a21d83b90449b6ecd760d6c19bad730c0de433d7c482a7b95
font_01_sfnt_off0000eee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 4912 bytes
SHA-256: 3dca451cac52ed717d3ac7fe9f52b56c0cf4f97092887384046cfbd130659b46
font_02_sfnt_off0000ff98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF98 11784 bytes
SHA-256: 04b07563d86115ceaca972604e5931966363bb3b92487bc2c56118da21260c72

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