Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1e5ed612747ee7…

MALICIOUS

PDF

48.8 KB Created: 2020-08-17 14:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 588846bad9f0b35520f7a115e51edc51 SHA-1: dae8ac7e48d787807fa4c682a26fc77e2511576b SHA-256: ae1e5ed612747ee73253550198d94914ae3b60cc017d71bf4216e30ff32a6676
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the text 'Daijoubu desu ka answer' and the malicious URL, suggesting a social engineering lure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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=daijoubu+desu+ka+answer
    • http://files.smadojo.com/uploads/1/3/1/6/131637014/pedodiwibewokek.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/traveling_salesman_problem_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/rubugemezojanivudijebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/diccionario_biblico_hebreo_espaol_luis_alonso_schokel_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/xotomikajatigisikexajage.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/neonatal_jaundice_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/3256/7195/files/numerical_reasoning_aptitude_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/medical_certificate_fitness_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/xedavaxojejepudaviv.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000645e.bin
5cc91ab2459c088cb94af2792cc9e9ad53e60a0074b54aca0006cffc9ba1d056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 5752 bytes
font_01_sfnt_off0000784c.bin
5a0d3da9081b4d70a7883406dbf830cd857cddfb3b460dfbdefa6e5647bc6a9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 5160 bytes
font_02_sfnt_off000089ee.bin
2097d48079e9c872d5b0a18fa8e1c0178f9f48d02c8c0a0ee33a07fdc0adafa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 14220 bytes

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