Malicious PDF — malware analysis report

Static analysis result for SHA-256 3124a1ca67b1a1f6…

MALICIOUS

PDF

46.1 KB Created: 2020-10-26 16:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 46f6fdf49fa46f527d1e42c296fe9bef SHA-1: e5a011bc5da5fb5b5553194dc09abd6f5fd98b2f SHA-256: 3124a1ca67b1a1f6801f7abb18af4964a43b9730ba8b5a4ee7b838db53c4df11
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://gettraff.ru/strik?keyword=race+and+reunion+pdf'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/strik?keyword=race+and+reunion+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411681/normal_5f960df93dc94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412897/normal_5f94326565d23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f86f5d62d348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87a52c72a54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f874399d7ec6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5f91c5e95156c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_5f9536acd9ca4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5f8a3fbe01f68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8d9e50c8cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f87be95b2e31.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/fd3bc388-5053-4fae-ad6d-ea9649b5ba7a/votebovosamuruvevog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40947ad9-8ee4-41e8-9ccf-aad9827b7b49/79903613471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c30d50-75c7-4f6f-b1cb-a457b173a1c7/49780035780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9234d267-6008-4cf6-9f04-c788d4e83ae1/red_giant_complete_suite_download_fr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf0b8aa-ee1d-48f7-80ba-05c0f185c6f2/97369747820.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/navodokit.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/african_countries_and_their_capitals_and_currencies.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/buffer_solution_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/xozokafilodegemigewegurel.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/21473945273.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/91432685811.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_off000076e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 4948 bytes
SHA-256: eecf54058353712dbe351caddbd963da4c6b06c0e5a8fde0c6258d94ae946220
font_01_sfnt_off000087c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C6 10628 bytes
SHA-256: 9d1190eaf1b136904c6bb2063f1b8a0627abdf01c400525eeb5431790d3685d7

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