Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e731b693c18b262…

MALICIOUS

PDF

41.1 KB Created: 2020-11-09 16:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 219e622441864c84b29905b6351a7c20 SHA-1: b4089468ff507087d85d705df3aaffc3c5e869a6 SHA-256: 0e731b693c18b2624d56348165e13ff743e7023b4752c99740697ebd1ef87158
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://gettraff.ru/123?keyword=anna+riva+books+pdf, is the primary indicator of malicious intent. While the document body is heavily obfuscated, the presence of this URL strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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?keyword=anna+riva+books+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f8fecc5cce31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_5fa1a046558c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420238/normal_5f9fd9fa2412f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f888ca34593f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f93b4922579b.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/f057444f-f047-40d2-8d63-86ff5975c46a/peavey_bandit_112_silver_stripe_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/battle_rope_workouts.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/bodebidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/948fa5af-9b19-4dc5-bc8b-f10044e34829/23470678186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10a18b6-7fd1-4e50-af90-7b03d3e4c919/73038881692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb28b59e-0243-419e-b806-1a96c0758a03/badeluditobotud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09cce52d-fbf0-44eb-9b93-3c9a1d9aa56a/musabire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/852fbd04-fd8b-4c41-ae15-a11e91807093/rezon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00608303-9f3e-4c3a-a307-aee29c85b3b5/prom_suits_for_men.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1697ebad-0f4d-4873-9a81-54c3ce8f7b82/bosch_300_dryer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40499825-f3a8-46ed-b2d5-16ca473b3ffd/tugodesagexixenabazewaf.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_off00005f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1B 5256 bytes
SHA-256: 85b4600ba3601971af37c5f645f752acbfc926524ff4d4ecea85eb1d66a72105
font_01_sfnt_off00007110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7110 11552 bytes
SHA-256: 0c00d316860e7fdaa278bb23705832027ba53913ee392962217674d88c2cd559