Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa6d053939d4032…

MALICIOUS

PDF

45.0 KB Created: 2020-08-19 00:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12ddfb731d774a5901d46b0c161ae40a SHA-1: c26c8d74a8a3368a1456ddcb36b5a600f9db444a SHA-256: 8fa6d053939d40324b951fd47abc5b5a51ebdbbdebaea744788eec8ddc91b471
128 Risk Score

Malware Insights

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

The PDF contains a prominent call-to-action lure promising 'Free music videos to my phone'. It embeds numerous links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=free+music+videos+to+my+phone'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of a 'download button' heuristic further supports the deceptive nature of the document.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=free+music+videos+to+my+phone
    • http://genafe.sepra-conference.org/uploads/1/3/1/4/131407511/5915411.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/27446675986.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7593/files/difukabawimaboli.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/tuzekaduxolegedugudujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3761/4499/files/ripalefor.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/58336203073.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/22257997389.pdf
    • https://cdn.shopify.com/s/files/1/0432/1460/2401/files/administering_a_sql_database_infrastructure_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/exercises_present_simple_1_eso.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/pdf_file_editor_download_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/sally_s_phone_oxford_bookworms_starter.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/beatboxing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/rusor.pdf
    • 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_off0000735d.bin
f06419b3a00b968c0110b17958bd74102a99c22207af71ac694709e1538a7b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735D 5188 bytes
font_01_sfnt_off000084eb.bin
ae192f0f99fd78cf894f307a9cb4d5fd7ac7be01966a85d9f8b07e66b76fe58e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EB 10144 bytes

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