Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8d2a870345326f…

MALICIOUS

PDF

51.2 KB Created: 2020-07-31 11:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ca7aad699abab8b83787f57375d6063 SHA-1: aadc8a5947bed113fa8c47ae0bf3bbccd4dd9c4d SHA-256: cb8d2a870345326f211ff932644dd92b8400ba293b8b2d335bb621b9f06ec0f0
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, a technique often used to direct users to malicious websites or phishing pages. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely part of a link farm designed to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'action plan examples pdf', suggesting a lure to entice users to click the embedded 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=action+plan+examples+pdf
    • http://files.oceanwalkfootcare.com/uploads/1/3/1/6/131637271/dewomasulema.pdf
    • http://files.desmoinesmennonite.org/uploads/1/3/0/7/130775588/5ef55f9378ad429.pdf
    • http://files.usabuscharter.net/uploads/1/3/0/8/130815095/2366245.pdf
    • http://files.emersymons.com/uploads/1/3/2/7/132710721/xidepazuj_kinefinebo_gapifita.pdf
    • https://cdn.shopify.com/s/files/1/0432/4959/8632/files/fokusitasumara.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/27986961096.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewowa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/bezegimuwud.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6037/files/33701464628.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/74002364890.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/30560925143.pdf
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/jafalo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/64995339205.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38030937597.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/wikejexixibesadafagesi.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_off00008c76.bin
b5148933fb7235dfcf44dee6e5eaa6839f215550e9511c157df117498bcb32fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C76 5048 bytes
font_01_sfnt_off00009d83.bin
7623285b6f8d5cd5d7ecc8ab597e4a9ec297c912598298af74457ab52d08f506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D83 10148 bytes

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