Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d41fdf02c817c1…

MALICIOUS

PDF

67.1 KB Created: 2020-12-17 09:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7745813c91fbe8d74c2947c189c5fac1 SHA-1: 7b355f2c15328db77e711e8ae7050f79b3c7140a SHA-256: 45d41fdf02c817c1bd58918137778233e4e1ec1bb407e50bf21c0e113528794a
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 'https://gettraff.ru/123?utm_term=skyline+middle+school+staff'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt, aligning with the Spearphishing Attachment technique.

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/123?utm_term=skyline+middle+school+staff In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/brain_training_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9f9d601-f1f0-4003-8cfa-8a32f545a7e4/high_waisted_pencil_skirt_pattern_vogue.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7879b8b9e860b7b217c01/t/5fd035818f1ddd5ccbd585aa/1607480707082/fall_guys_ultimate_knockout_download_apkpure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc728d4c43b171198891597/t/5fd6b4a2ffab5d3c5606e72e/1607906466949/lokovinisadosogiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c05d6b97992eb567e8ce/t/5fcb6f6a1ef6d1662fee84e0/1607167850716/horror_zombie_movies_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/avondale_college_uniform_shop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f76237df-f45b-46b6-98fb-e3221ee1263f/elite_dangerous_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/assassins_creed_origins_trophy_guide_psnprofiles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55b99a13a450bab121f4f/t/5fc83ec06031f4738618a403/1606958789341/gunuvawovujirivoxam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c91011f6a41984a72723/t/5fc9d51955485c3109b31e89/1607062810589/77347092293.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65777e9fc3622d5470b25/t/5fcbcb580814be4f73f2bd30/1607191385815/dafogab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f26dc62-c165-4131-abf3-55dac2c1a6d9/el_viaje_de_su_vida_summary_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6119e5-f195-4776-a5c3-3d3d42f6ff06/la_casa_de_bernarda_alba_resumen_english.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcebfa3affad1251da488b5/t/5fd5f188d654060362bc42c6/1607856520674/87168870156.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/avg_antivirus_for_windows_10.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_off0000cc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC05 5436 bytes
SHA-256: f8a220fc0ba087f1b16374ed567a4bdd29a4a6ac03dc62a853b3070b6fb8f9dc
font_01_sfnt_off0000de6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6B 9792 bytes
SHA-256: 68e142f6dcd4457d4736686f3f11f0d401a788ead9a10f659efd74d9c0df9aa4

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