Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca6f699c0c5211f…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 00:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 688c3f611624e3eb5b795b715ce8db86 SHA-1: 0fa892504298c5fadb9ed43ac47cb4728ff51021 SHA-256: bca6f699c0c5211f14d043d55767de3ded1a8435d928d8011ec1e28e6e47ef27
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to a "Game center mod apk" and embeds multiple links. One of these links, `https://ttraff.cc/pify?keyword=game+center+mod+apk`, is identified as a malicious redirector. The document also contains a link to `http://fopazif.titansinvite.com/uploads/1/3/0/7/130776255/ramiwuzaju_tirotuz.pdf`, which is flagged as unknown reputation. The presence of a malicious redirector and the SEO link farm technique suggest an attempt to lead the user to 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=game+center+mod+apk
    • http://fopazif.titansinvite.com/uploads/1/3/0/7/130776255/ramiwuzaju_tirotuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/pic_assembly_language_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/ruxojulujabozijom.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/51957362779.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/busuxudezeximusugizopolum.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/danumepukixipukukoxud.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/genre_text_grammar_technologies_for_teaching_and_assessing_writing.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/12589880180.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/wubixakebimos.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_off000049b0.bin
98b80b070435d4ec0eec954dd6424d9b580739af03dabec171b99fac60f4b607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B0 5104 bytes
font_01_sfnt_off00005afa.bin
97e48f13bc165ddc3581a50036ab38f22237e3b3895222e16b00a309b7c5542d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 10420 bytes
font_02_sfnt_off00007ee4.bin
bfc441d837b7b3b6e145db50ef40ca26079b22b75b7d4883bc21c88ef510c1a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 16092 bytes

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