Malicious PDF — malware analysis report

Static analysis result for SHA-256 8becd779df1fd783…

MALICIOUS

PDF

50.0 KB Created: 2020-10-30 14:57:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 91cf4ec07a0f7611487d9984f34655f9 SHA-1: 1ee0377f1997df2ac3a32591bd259b56ba249e5d SHA-256: 8becd779df1fd7835789c032ac9cc084e5a681a56eac966e09ffdeacdb547ea3
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://ggtraff.ru/aws?keyword=1986+to+2020' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

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/aws?keyword=1986+to+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f9aa0665546b.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/4462752.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1927833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_5f9aaa849b2d2.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/sugowubuf/2g_international_architecture_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0309/1872/files/android_webview_progress_indicator.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/14153644745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4460/0470/files/wusakutatugudotusedun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0114/2215/files/listado_de_derechos_humanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/meraligupasegozor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff2edbb4-b230-4275-825a-df11f77e35d6/stock_transfer_ledger_template_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/4031/9899/files/rudram_chamakam_sanskrit_with_meaning.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_off0000846e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846E 4896 bytes
SHA-256: f354e113f28e41e72824471057301a3ea90653009d87666879d5805e6b68201d
font_01_sfnt_off0000952b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952B 11796 bytes
SHA-256: ff12e60e9fc36ea6c7f47e1358d6170d5e85573db707fbdb8119250bb025b610