Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdda08ca251b84ad…

MALICIOUS

PDF

46.2 KB Created: 2020-08-08 17:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 246c70b7fd6b1df737866d49b1e5b43d SHA-1: e2e1a5bacdf420a52f46d74b3e87c76a9adc7abc SHA-256: bdda08ca251b84ad79ce8106653a53c97d3e3f325ed7ec1ae17669a7cd8eadcc
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a social engineering lure, instructing the user to install a browser extension or update to view content. It also embeds numerous links, with one identified as a malicious redirector. The primary malicious link, https://ttraff.cc/pify?keyword=canadian+citizenship+practice+test+pdf, is designed to lead users to harmful content. The document's structure and link farm suggest a campaign to drive traffic to malicious sites, likely for credential harvesting or further malware distribution.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=canadian+citizenship+practice+test+pdf
    • http://files.commodoretn.com/uploads/1/3/1/4/131438216/3696220.pdf
    • http://files.biggestrebel.com/uploads/1/3/1/8/131856664/dodave.pdf
    • http://files.ptmwc.net/uploads/1/3/2/8/132814791/wibalagomeroz_fegiselevujomev_rixazajefasur_memesixadipidim.pdf
    • https://cdn.shopify.com/s/files/1/0448/6122/7169/files/lion_otter_beaver_retriever_test.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/jojo_s_colored_adventure.pdf
    • https://cdn.shopify.com/s/files/1/0443/0607/1708/files/business_english_and_conversation_for_the_efl_esl_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/xukubanu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/xitusowutedo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/al_sweigart_automate_the_boring_stuff_with_python.pdf
    • https://cdn.shopify.com/s/files/1/0438/2294/0320/files/54976096202.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/sewiwepipofaraboponusig.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/wuwikoluxudinefafexojose.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/gilded_hydra_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezax.pdf
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/76402898127.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/roll20_spell_macros_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/mubuperikeko.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_off00007699.bin
18d5a5510d59cf3e374d05cac992b8dd091892390776ed38ee67834df2dbfc71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 5168 bytes
font_01_sfnt_off0000882c.bin
db80f8403f671dfe37783a26d9a779455e06f015c7723a86348d444d9268ff0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 10488 bytes

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