Malicious PDF — malware analysis report

Static analysis result for SHA-256 a04e9c96c1c2e7eb…

MALICIOUS

PDF

42.6 KB Created: 2020-08-18 18:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40188fc878e39a89dc84da4e34c42c89 SHA-1: 57b2bc6b4916422c9b2365f231c8e2567a213b42 SHA-256: a04e9c96c1c2e7ebc1301526f674c90c60e741c19e535d2979088e81ed19de1a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=hungry+shark+evo+mod+apk+data'. This URL is presented within the document body, disguised as a download for 'Hungry shark evo mod apk data'. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure malicious activity. The primary malicious intent appears to be directing users to the ttraff.cc redirector.

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.cc/pify?keyword=hungry+shark+evo+mod+apk+data
    • http://domegap.incendiumarts.com/uploads/1/3/1/0/131070450/wokodebudofavevula.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/marguerite_yourcenar_alexis.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/core_java_objective_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/1762627715.pdf
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/42300390055.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/56920074677.pdf
    • https://cdn.shopify.com/s/files/1/0444/4664/6439/files/baudelocque_schultze.pdf
    • https://cdn.shopify.com/s/files/1/0437/8063/6821/files/is_auchi_polytechnic_part_time_form_out.pdf
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/dye_sublimation_shirt_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/1602/7303/files/50002970592.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ad1.bin
f1f1edd305678ff73f2fb9dc1bde034aed562f698bbe31febd0ab948de88ce67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD1 5360 bytes
font_01_sfnt_off00006ce1.bin
ea00298a8b57c31c86a25ca37accc3e2b57c06ec1a4f04230f2bcb595206e1fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE1 10224 bytes
font_02_sfnt_off00008fc8.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC8 4324 bytes

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