Malicious PDF — malware analysis report

Static analysis result for SHA-256 3508adde9c5a9608…

MALICIOUS

PDF

74.5 KB Created: 2020-12-22 22:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5f45aa51b2fc93188acc98a0383c0479 SHA-1: 355523db063a66ab0388098d9d92d467b053b2b5 SHA-256: 3508adde9c5a9608550f1892f38c83c1ad17b1b1ca51ee39a5256c04fbb97709
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/aws?utm_term=channel+9+guide+nsw'. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

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://gettraff.ru/aws?utm_term=channel+9+guide+nsw In PDF document text
    • https://static.s123-cdn-static.com/uploads/4379471/normal_5fdf31353c5e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_5f9eef000b7ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409992/normal_5f93e541123d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420906/normal_5f99244f04eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_5f99c92f148e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412403/normal_5fdc86aeafb51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5fbee0e9d17b3.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/9757a01d-50c6-4277-a362-8cf6adaa0c34/77034161996.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/jusakibosed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c55440f1034a5ca82015/t/5fc353cd6457125654a67feb/1606636494093/herbal_tampons_for_blocked_fallopian_tubes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fded181546cca2c41591fb2/t/5fdf0d1bf11f517dbbd265a2/1608453405070/geluratulagemowo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc561b0116eb00e3c69e643/t/5fc6f55dad3e641192391e0d/1606874462033/total_conquest_mod_apk_android_1_plus.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_off0000e671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE671 5144 bytes
SHA-256: db97e3748a2d6b6e3c13d48d1490a2a47c2dc575d9922e56eefc07568b99b88b
font_01_sfnt_off0000f7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FC 10604 bytes
SHA-256: aaae7acd15a80b7f3d50ed49c858232114f572582a6cb7bd03da50ce38439183

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