Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6acaa4b75634dd7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 02:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eff614258a037971b7b995066cba026 SHA-1: 0cd74c4a6ed23745df417295932196161d0484ba SHA-256: e6acaa4b75634dd700f2460506e49efcc71624a2b9efbd374e65f2d593da71c6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=adverbs+exercises+for+class+8+with+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of further malicious behavior.

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=adverbs+exercises+for+class+8+with+answers
    • http://files.visualresearchnetwork.co.uk/uploads/1/3/0/9/130969572/8a41c.pdf
    • http://files.daviestreeservicesltd.co.uk/uploads/1/3/0/8/130814280/kamipabotu.pdf
    • http://files.chiefskugaid.org/uploads/1/3/2/6/132695829/a213cbab8f.pdf
    • http://files.haylingchristiancentre.org/uploads/1/3/0/7/130738614/d2aeae666.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/teachings_of_don_juan.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/mumilaze.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/change_file_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/a_random_walk_down_wall_street_author_burton_malkiel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kivamusefelozadadazub.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/escala_salarial_camioneros_julio_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/88719868804.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/ielts_general_reading_practice_test_with_answers_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/4011/0754/files/php_and_mysql_web_development.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_off00006024.bin
ca5f2d626b8f3b2ce6e05b400d235c888921e0756991648ec26ee02c9cf6e41f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6024 5440 bytes
font_01_sfnt_off0000729e.bin
9c60ad5732816951ceb1d1df20c426d64f063f83241d69a1d91a86a0407e4f9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x729E 9908 bytes
font_02_sfnt_off0000948d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x948D 4324 bytes