Malicious PDF — malware analysis report

Static analysis result for SHA-256 9041a72dadfa3a6b…

MALICIOUS

PDF

72.7 KB Created: 2020-12-29 13:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8ce7b341653b0163216485a4ca2633f9 SHA-1: 9b90cfeb7de238dfd737abcd7478825a9d26745a SHA-256: 9041a72dadfa3a6b733bd6cc87ed91aee1a637adb8dae31b4532806db7101519
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier and ClamAV also flagged this file as malicious. The embedded URL is likely intended to lead the user to a phishing or malware distribution site, aligning with a spearphishing attachment attack pattern.

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://ggtraff.ru/strik?utm_term=monkey+don%2527+t+touch+dog In PDF document text
    • https://static.s123-cdn-static.com/uploads/4373248/normal_5fe50f7b35f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_5fa23e9b14723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453098/normal_5fdb53ea6c483.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/1a3f59a4-f827-4561-bac1-efe23b9d2f77/wings_of_fire_book_download_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f44d5a-97e7-42a4-b9ba-d7c8879e50c2/80263660759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae6b3c56-5066-4c23-b551-18317641d432/binary_to_bcd_minecraft.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/aqua_de_beber_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/24283521260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6746096-69ed-49b7-a381-b69a6884c859/war_dragon_breeding_guide_harbinger.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/97954358976.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/vudutejubonud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54bb991-5cbf-407c-955b-0ec93e66c32f/secureline_vpn_license_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b282cd-f938-4e87-84be-5ebac541d2d3/gutifofuwegupowo.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/android_tv_box_amazon_video.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_off0000d597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD597 2940 bytes
SHA-256: b1a9ff6ba35dc6afe0897100fc92f3f1f3234f8fbf85b49142f1f5db2d57e62f
font_01_sfnt_off0000e023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE023 4888 bytes
SHA-256: 4a45a298b1bef7f769b881d8339436ec72a4592b8b6af96c719f917717d3722b
font_02_sfnt_off0000f0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E6 10844 bytes
SHA-256: 3e2188a9ccd3bb81b36d5d4412f73460a2bdd59549b8116d96fd42c14bdf4c54

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