Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d5014293517112…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 01:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5761b82d0b9fec1dba62e15d2952f0e2 SHA-1: 4f8deae347484d3143b00118bfef97b58a73fd82 SHA-256: 90d50142935171124d35fe28c6647e06e51adb8145bc41239a10c327af2c19bc
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sudoku+easy+level+with+answers'. This URL is likely used to redirect users to malicious content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains, potentially to obscure the malicious intent. The document body, though partially garbled, contains the same redirector URL and a reference to Sudoku, suggesting a lure to disguise the malicious nature of the links.

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=sudoku+easy+level+with+answers
    • http://files.michimathias.com/uploads/1/3/0/9/130969446/vobebiwarofab.pdf
    • http://files.maithainc.com/uploads/1/3/2/6/132681464/jeparuvedapisil-satiporuguve-kuranu.pdf
    • http://zobixug.lincolnanglican.org/uploads/1/3/1/6/131636612/kafinow-jodiwo-nesenan-vudumetumota.pdf
    • http://joned.creativetrivetstoo.com/uploads/1/3/2/7/132710712/c0fefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1085/files/17592467673.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/2574090758.pdf
    • https://cdn.shopify.com/s/files/1/0461/9675/2534/files/bugudolijefalegamogikawat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/72391430890.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/81892110998.pdf
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/appium_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/business_plan_structure.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/89234537380.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/jagegimezepajugubiku.pdf
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/onan_4000_generator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/disadvantages_of_biotechnology_in_agriculture.pdf
    • https://cdn.shopify.com/s/files/1/0463/2697/2571/files/fexudimavinijumadaxewa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/santa_barbara_bowl_seating_chart.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_off00006711.bin
02757dc61b1475e0bde49489a568a44e8efa0a53f48d52719f15110b42e3dd8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6711 5336 bytes
font_01_sfnt_off0000793c.bin
b33718e4a44f24105f04c0a4c43021bcdbeeb2b61c1e27fef45bd2fbce9d9a7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x793C 10560 bytes