Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3224bae524e4f5c…

MALICIOUS

PDF

39.2 KB Created: 2020-08-14 18:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d72dc8792ed7ac17e0c08ade184c36b SHA-1: b8c8b1f6547819deab47e7bffb7e592e212a18e3 SHA-256: d3224bae524e4f5c17d3160fe892c9a71cfc76510a16ba21c9fef0fec97a5ea6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=instagram+stories+templates+app'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to lure users to a potentially harmful site.

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=instagram+stories+templates+app
    • http://files.multimodalresearchteam.com/uploads/1/3/1/4/131483069/1366155.pdf
    • http://files.nienke-bodenheim.com/uploads/1/3/1/3/131383586/watix.pdf
    • http://files.andreagoldberg-art.com/uploads/1/3/1/3/131383318/8414261.pdf
    • http://files.erikgjesfjeld.net/uploads/1/3/1/4/131438188/fibotewaxewuvo.pdf
    • http://files.lorivonderhorst.com/uploads/1/3/1/4/131453325/puvivikadupufexonuvo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/gisimerasalunesow.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/fefuzabaxog.pdf
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/27028825688.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/22818136977.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/tiluxix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/bisogaxuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/frecuencia_cardiaca_semiologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/traitement_thermique_des_alliages_d_aluminium.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/telugu_christian_books_free_download.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_off00005e70.bin
8578e0a94147c0d369c444508ba94e1c4e5145eee76427cf5409cdace8bc65e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E70 5076 bytes
font_01_sfnt_off00006f95.bin
efdd3d3287c2e6e823f2d4a51f6f898e88f65e600b380e43631eb72284d93d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F95 9548 bytes

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