Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec6adebb6bc738d…

MALICIOUS

PDF

40.6 KB Created: 2020-11-02 00:07:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c6a2710d085ad553ad2f3aae597a5e1e SHA-1: dc5968a6a3546f751a006afe5b7c5d2fe6fa2dd6 SHA-256: 8ec6adebb6bc738d1b6499fac8a6d85d0a8e9164e9c07bb8c0fc29eb93b90694
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.com/123?keyword=visd+jobs+victoria+tx In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_5f9a674335762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5f94ed4c5fe0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422890/normal_5f97261873bdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f952f2e0b584.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7679/5548/files/34024141845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8942/0184/files/athens_public_transport_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8258/9372/files/unlock_phone_with_android_device_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/calendar_september_2019_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/19934271853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc165ab-b339-4e13-a08d-492821ccd3cd/geo_metro_repair_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb7f2624-fac8-43ab-87e7-34f81918c62a/7529727840.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/juwovujuserajofuberexeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/latest_spotify_premium_apk_mod.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_off00005dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFA 5208 bytes
SHA-256: 9a63b10e35ab1404a94bf03333feb971b3a4a50aeb40b225af56df33344812b2
font_01_sfnt_off00006fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC9 11136 bytes
SHA-256: 95ce765cf23bfd4506aae8683dd4257aac414ad47f4fd402fe13b0c57840abba