Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5a46d446bc0c19…

MALICIOUS

PDF

42.4 KB Created: 2020-10-08 06:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e2f35b0ea04899d4a208532ad2d48b20 SHA-1: 3cc849850e02a9903332f725e4eb580191d5ebc9 SHA-256: fc5a46d446bc0c199c8d4fd8088ac750cbece17af6c190e1b187a1df766c92ec
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 'https://ttraff.me/pify?keyword=sprite+cranberry.net+dog'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same URL, indicating its likely purpose is to lure the user to this malicious site.

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.me/pify?keyword=sprite+cranberry.net+dog In PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/tusebobalikatirarakuxix.pdfIn PDF document text
    • https://site-1041384.mozfiles.com/files/1041384/diledatamulolud.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/06556273-23db-4e43-8fee-94ac389889b9/fapud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315ad645-97c1-4c1f-8625-d776438a581c/binogilibewaporun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cece0c79-3428-4f83-87c3-b979e380ff56/81444598569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2096dc8f-a9ca-4f66-b5d5-307683084b75/jakumogejepaxukewutib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c116076d-f889-4210-8c72-494d3a359bf4/ponebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8123/files/daneboserabekofajejusige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/edwin_jagger_de89_short_handle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5221/1099/files/lowazusekiribomoxanefin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2382/6085/files/enuma_elish_character_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/to_the_sky_kingdom_tang_qi_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72ca6d48-1445-41b2-9adb-2066309747cf/lomugazefadarotudixak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd95060-6974-4b3a-a108-7559dc053a6f/67303402824.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_off00006687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6687 5408 bytes
SHA-256: b793abf475e0525f11622c6c8d46778a1bdd51f35711d1915e8b0216b0ec2674
font_01_sfnt_off00007904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7904 10908 bytes
SHA-256: 827e5fff0ef62c723a3a6567edc51577cd30f95241a3d3685f64c833178c4ddf

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