Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4560354e4b91a8…

MALICIOUS

PDF

48.4 KB Created: 2020-08-13 23:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e9457ac4b00024e8193d4d01ebfb0f2 SHA-1: f342a4b72aa337e6b08caef336953326b57196ff SHA-256: 2b4560354e4b91a8bf48bbd32188659f712e264989bb01e71e34fcd5f891bddf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links, 'https://ttraff.ru/pify?keyword=amiri+garibi+film+song', is identified as a malicious redirector. Another heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0434/0911/3240/files/pezamisamegusavu.pdf' being a prominent example. The document body, though heavily obfuscated, contains the same URL as the primary malicious link, suggesting the document's purpose is to direct users to this malicious 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.ru/pify?keyword=amiri+garibi+film+song
    • http://files.distributorsearchindia.com/uploads/1/3/1/4/131483235/logutunegake.pdf
    • http://files.thehaesslyagency.com/uploads/1/3/2/6/132682787/kibabevawekelero.pdf
    • http://roxuvatot.artofwilson.com/uploads/1/3/1/1/131164250/dafafowotozupawatogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3240/files/pezamisamegusavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/44310384999.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/radodime.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/contoh_dokumen_amdal_rumah_sakit.pdf
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/51195818838.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0476/files/durability_of_concrete_design_and_construction.pdf
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/musuvuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/starbucks_consumer_behavior_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/51590378252.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/66034400163.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/82450296547.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_off00007476.bin
6552aa090a9ffc995bc068f8adcd8d647f6f06c37d14cf3b67c932d34bf6ea2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7476 5216 bytes
font_01_sfnt_off0000861b.bin
c4b74aace357d8d4709fddc38f6f50ff805cade05b849632217cae89085f321b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861B 15792 bytes

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