Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad600ffe8206dfbf…

MALICIOUS

PDF

32.6 KB Created: 2020-11-01 06:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e602f12eb4baec0db475e4511e41d731 SHA-1: 25d3c4006f61330bfef45c0e1aa7321dec08a797 SHA-256: ad600ffe8206dfbfbc1eb94d5630f67ba2fe40e6c266f140cdda70a9f220e381
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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/strik?keyword=ffx+fortune+sphere+farming'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further compromise.

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=ffx+fortune+sphere+farming In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418362/normal_5f9cdbaa4f461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f87474775b5d.pdfIn PDF document text
    • https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/e20617280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_5f8af490eb602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f96b7138031a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/xivazovobumomira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bda8bdb-813e-40e0-93c2-1770ebc34395/22313403895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/counter_strike_source_for_android_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/cipp_evaluation_model_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223662dd-94fc-4d41-b162-2924cd658c60/raluxobozomota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a748e1d7-4bcd-4956-8b27-36e8eb553a6a/41879715524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5426/8053/files/kakovogexopewa.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/bewepinulepexovuxajubala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a29e781-608a-45cb-8726-d935490e1542/39830966335.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_off000044ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44CE 5304 bytes
SHA-256: 8088efef4e2f398d04159fb16ea5dd813ff32349d4e59357313771361f329b09
font_01_sfnt_off000056be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BE 9192 bytes
SHA-256: 3bb85f130fa659a76c4df33ee5ad9194a125b34f0b7d57ccf8d247bcaa6e355b

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