Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2c095528a45e9d…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 03:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 614fc81f8b4fb8f99477d0b466f79c84 SHA-1: 7a2550d91ab81e16c9f952027547093a455c6ded SHA-256: 2c2c095528a45e9d369a5b6040ba645a57a2d678a2e0b668ca2c429a36754296
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'formation of body cavities embryology ppt' and includes the malicious URL. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=formation+of+body+cavities+embryology+ppt
    • http://files.elizabethhorton-newtonauthor.com/uploads/1/3/1/4/131438216/1414960.pdf
    • http://files.generationbusy.com/uploads/1/3/0/7/130775592/6859983.pdf
    • http://files.inyfilmfest.com/uploads/1/3/1/4/131453605/91b5a6ccfa31.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/11887809034.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/61743162120.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/metales_de_transicion_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/zafot.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/8616490263.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/kofix.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/linked_list_c_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/lerolome.pdf
    • https://cdn.shopify.com/s/files/1/0445/6103/9524/files/snipping_tool_shortcut_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/rlcraft_wiki_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/irrigation_engineering_by_kr_arora_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/4966643251.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_off00007049.bin
90c2083ab6a26f0b341af8802be480a5bc591a3a70af3083b381922b85aeb408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5732 bytes
font_01_sfnt_off000083b8.bin
c1a8ca10036b3d232ff90a1c1ac1100d4b576d29d8f8c5285e5bc56025bb21b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 10668 bytes

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