Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6d0fa79dceb51e…

MALICIOUS

PDF

38.3 KB Created: 2020-09-20 12:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584ade9be9f0b8e0a4690adfcd2993e5 SHA-1: aae6f1a07b944191cb977a7c2fd85c2ae48eebda SHA-256: 3c6d0fa79dceb51ebb48ddac5f439501ee3590f42c8068950b5f151e1884fd94
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, masquerading as search results, designed to redirect users to malicious sites. The primary link, 'https://ttraff.link/wix?keyword=computadoras+de+escritorio+apple', is identified as a malicious redirector. The document body contains garbled text but also includes the target URL and other PDF links, reinforcing the redirection attempt.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.link/wix?keyword=computadoras+de+escritorio+apple
    • http://files.peterboroughplayers.org/uploads/1/3/0/8/130814714/5660e712c5.pdf
    • http://rofure.englishangles8.com/uploads/1/3/1/0/131070306/pedupurifupif-zumeri-fowesameleperi.pdf
    • http://kakaz.casaguadalest.com/uploads/1/3/0/7/130739693/0901d1e2db3.pdf
    • http://watat.glendalebc.org/uploads/1/3/0/7/130775565/wakalapuvefarux_nirinafo_wuzazepavabuji.pdf
    • http://zimikapej.lesleygilesart.com/uploads/1/3/0/9/130969497/keguseti.pdf
    • http://xipivilum.rachelmccarthy.com/uploads/1/3/0/9/130969813/8382fc17c1d3b.pdf
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/bengali_album_song.pdf
    • https://cdn.shopify.com/s/files/1/0463/0645/9808/files/sto_free_admiralty_ships.pdf
    • https://8c967289-bb5d-4057-b35d-b1bfb286a1eb.filesusr.com/ugd/724fb5_d7d6ad2ab63940d889684b2a88ac78f5.pdf?index=true
    • https://80171157-d494-4bce-909c-22450f0cb1e2.filesusr.com/ugd/a91264_f46c144ab4c043c0b003fd5d980b95c3.pdf?index=true
    • https://53530894-76c5-4943-9924-0be9077e95dd.filesusr.com/ugd/c5d40f_73eca58326b44b6ca73f027ab68c5c5f.pdf?index=true
    • https://aa54d865-9fde-4592-baac-1d08e1207555.filesusr.com/ugd/941881_98a277c6bb6d429aaaf7c36ca496df92.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000533a.bin
0baeac5658e8f4f022bbf6cd89a800592a964edd0685b9de44ac22cad13d8618		 pdf-font-stream PDF embedded font (sfnt) at offset 0x533A 5124 bytes
font_01_sfnt_off00006483.bin
b77a4112bc959c89417b50d7b95e9dfdec64f4f5ec4bf0548956add0070867d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 11696 bytes

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