Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9fd1c674e02809…

MALICIOUS

PDF

43.2 KB Created: 2020-08-15 07:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab4ea911e3d7ced39fd69803fa382fe6 SHA-1: b7a9532d57674143a8e4164dc4ff41c13fa60c26 SHA-256: ed9fd1c674e02809989a853c0c89b8de171c16187bc56ef7831b38e225696af8
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sp+balasubrahmanyam+christian+songs+free'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which point to Shopify domains. The presence of a 'download button' heuristic further suggests a social engineering lure. The document body, though heavily obfuscated, contains the same redirector URL and a call to action, reinforcing the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=sp+balasubrahmanyam+christian+songs+free
    • http://wovokali.greatwitsjump.com/uploads/1/3/0/9/130969204/durilozam_rumogesuna_guvalaninoso_lipupu.pdf
    • http://files.affordabletherapytoronto.com/uploads/1/3/0/7/130738984/9436615.pdf
    • http://files.cookingfunbyz.com/uploads/1/3/1/8/131857465/dosewavoniguje.pdf
    • http://files.samanthagottlich.com/uploads/1/3/1/3/131380995/7628399.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/kinunefabok.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/59786283374.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/84904593431.pdf
    • https://cdn.shopify.com/s/files/1/0440/1142/1854/files/ardhanariswara_stotram.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/25243051420.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/serananovuja.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/english_grammar_language_as_human_behavior.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/61540442917.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_off00004cef.bin
f83735fdf87f1fb446e753ee7d6f97114e27d4017df43ac79b202d664d35a5dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEF 5776 bytes
font_01_sfnt_off00006072.bin
9533c2d33b444c07704a95b2479e75195a7ab4aba5df2e65ec8b90e897e85565
pdf-font-stream PDF embedded font (sfnt) at offset 0x6072 9828 bytes
font_02_sfnt_off00007c8f.bin
73546fc9d377644b9999fb2b5e63b7d7a4693e56a81c22912b70ec9c86f3d3fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 10320 bytes