Malicious PDF — malware analysis report

Static analysis result for SHA-256 df8667fd1bee53f3…

MALICIOUS

PDF

41.9 KB Created: 2020-11-04 14:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 107a9480e1b03a678a4980651c20a07b SHA-1: 92aeaa36a1940fee423514d49d4e3d5c4170d777 SHA-256: df8667fd1bee53f3c36a3ec9bfa1596fe138f9d560381f7f7fc30624aa7721b7
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded URL is a 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://ggtraff.ru/strik?keyword=trophy+trout+guide+service In PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/zizijix-waditivizun-pabunu.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/likujibibunonevuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5f8a305d2fd67.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/4957855.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/9759a3c4-e98d-4783-9274-40f12485783b/fenukenovufowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63aad22c-868b-48fb-92dd-2b17d5b17d38/xuxevobiwute.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/12106910028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87b7e965-4aec-488f-b0c5-d51228c8b5bf/words_for_different_sizes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35651a6c-bee3-4934-9de3-dce98cfdd6ef/11061309443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1a708ee-f409-411c-8190-ef6056f33a95/30346290031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4336cfe-b4ea-40b5-9024-45f23602f3e4/15791528686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76706cc0-2fa5-498f-a3ae-6c201becd59b/39374503330.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_off00006282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 5204 bytes
SHA-256: 29b0625e422c8efe8813a17edf0bc4a15a0bfd9b4254226b9f01f986f050f7c5
font_01_sfnt_off0000744b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744B 11300 bytes
SHA-256: 4d2f861c3c5c29bae50010d9860ad8981328d185c2fe696927eea524e8b04330