Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2234a03090822a1…

MALICIOUS

PDF

63.3 KB Created: 2020-11-02 05:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 742c16494286b96b142689802e5d7699 SHA-1: 1d9a5a3bfabefc7b84550952f7b3838233d6d5a8 SHA-256: c2234a03090822a1f8676b5a5470f29bda5d568506d82d9cb726a12bcc1f3e90
94 Risk Score

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://ggtraff.ru/123?keyword=vitale+skin+care'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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/123?keyword=vitale+skin+care In PDF document text
    • https://limisakaxenit.weebly.com/uploads/1/3/4/3/134371081/fd1ac9e1e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427780/normal_5f9c39eb3098b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f9073fe990c6.pdfIn PDF document text
    • https://jibudodenip.weebly.com/uploads/1/3/4/3/134364722/mojexudebupumubi.pdfIn PDF document text
    • https://ralokokotozupar.weebly.com/uploads/1/3/4/3/134340958/kivupe_kekevevukewazo_topudata.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/1/0428/1804/4070/files/jilimeduzoteduw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e1b83d-0c7f-4c66-b975-c2fb33a06774/tree_of_savior_classes_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94762b2c-79ea-42f9-b944-21c93505e814/historia_de_la_musica_de_banda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2693/2124/files/12038765333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37324c3c-3ad9-4f2e-8f3b-f973a6177923/24395242115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/56425433063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/0983/2635/files/miputitelubakekol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d4c4b11-bfce-4fa3-8ae0-926aba0e22ea/86194026844.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_off0000b986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB986 4824 bytes
SHA-256: dc023e2b6d5c88f1a451f4416225a9c886347e2a922990ca3fea1662845d243e
font_01_sfnt_off0000c9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FB 11348 bytes
SHA-256: 34529e931dbec3dc8c3aed19c01e2be671524ff47640c169f2600bde85c20ef4

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