Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8091f550247952…

MALICIOUS

PDF

51.6 KB Created: 2020-08-24 04:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027eccf40384f44f83c35ff7177128a0 SHA-1: 73000de767f35b3c50e06d2e82d05bc2d0ca5c31 SHA-256: dc8091f5502479522edb06e056a2c10a60a69b9655796f2342563bd21bc36c09
160 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised with a keyword related to video content. It also exhibits characteristics of a PDF link farm, with numerous links pointing to external resources, many hosted on Shopify. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick the user into installing something, likely a malicious browser extension or update, to facilitate further compromise.

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.ru/pify?keyword=video+from+vimeo+chrome
    • http://files.lonelydoggallery.com/uploads/1/3/0/9/130969710/431636b5.pdf
    • http://files.johannesburgwildlifevet.com/uploads/1/3/0/7/130776254/nobawugizijulesiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/rezaredefelejup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1061/2644/files/77366300751.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/informatica_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/basic_english_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/28491887976.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/matakawebo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/31082156618.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/color_blind_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/16524162532.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/sales_forecast_template_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0461/4825/5907/files/lezokituvazazuzera.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/xajutimirupexuzapom.pdf
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/jemediwulodutavozuka.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc2.bin
800549d06157dfd7e3291537c82c8922f32c8501665c7bc5a40678ab53875124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 4468 bytes
font_01_sfnt_off00007aea.bin
2a9645b17c116ff36721e90485bdf80df0dfaab544bc80f8481017157a3a02dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEA 10064 bytes
font_02_sfnt_off00009d96.bin
534e44c921e8acb9c8e993207df297c85ca6c672af4c6174c05b3ca24a170572		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D96 16388 bytes
font_03_sfnt_off0000b321.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB321 4324 bytes

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