Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e2934785e89674…

MALICIOUS

PDF

38.4 KB Created: 2020-07-29 18:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aca24eafff20a68b81f0fbc9c8ce938 SHA-1: cd56e27b577644f0e38fd4bb581b3b03a3a90c8f SHA-256: f1e2934785e896745f20de6175f87b87ae0f6a7630afb299a6401c39a605309b
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous links to external PDF files, hosted on domains like cdn.shopify.com and others. The primary link redirects through ttraff.com, which is flagged as a malicious redirector, suggesting an attempt to lead users to malicious content under the guise of providing free downloads. The document body, though heavily obfuscated, contains text related to the lure. No scripts were extracted from this sample.

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.com/pify?keyword=data+communication+and+networking+pdf+free+download+tutorialspoint
    • http://files.stfrancismadisonchristlife.org/uploads/1/3/0/8/130814390/wutobize-zejevixenero.pdf
    • http://files.jerrywilliamsphotography.com/uploads/1/3/2/6/132682851/runiko.pdf
    • http://files.comsguild.net/uploads/1/3/1/6/131606069/3113291.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/88171258427.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/kuwovuvumanojigax.pdf
    • https://cdn.shopify.com/s/files/1/0437/3449/9479/files/nojixozupitus.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/zopiguzug.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/pideru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/75931680088.pdf
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/kalemotodivazil.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/7901598747.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/72590328673.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/32232817005.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/98285384955.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/11725405483.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_off000058a7.bin
7a00fbc53dccca7070868a798bbe6c9b43514af5cf1ee05bcd7d3f9907334ad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A7 5512 bytes
font_01_sfnt_off00006b66.bin
7b00d872c28d0bc118e14372ad6ef2d32e5504f77147eb40208c30e32cf308e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 9500 bytes

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