Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd116f430b8a6514…

MALICIOUS

PDF

44.1 KB Created: 2020-08-01 04:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80d05171fadf3a84ae17c507f4e73131 SHA-1: 4475ab50bb0403832d081b6e06434193884ec2c4 SHA-256: cd116f430b8a65145cbe60d4195b13ab42d06ef48ff89c7bde4b130e02f60904
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=ftb+academy+mod+list'. This suggests the document is designed to redirect users to malicious content, likely for malware distribution. 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.ru/pify?keyword=ftb+academy+mod+list
    • http://files.cbdstop.co/uploads/1/3/0/7/130738752/gumaxofo.pdf
    • http://files.mysunnymead.com/uploads/1/3/0/7/130739204/6181306.pdf
    • http://files.alkistis.net/uploads/1/3/1/0/131070529/426abcf78a5.pdf
    • http://files.mikearend.com/uploads/1/3/1/1/131164568/silugu_jikubo_nudegujiduxusog.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/dogam.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/13437161028.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/51816356165.pdf
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/84846591371.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/50767233517.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/4992909758.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3708/files/xaxezu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/6248423029.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/10513783775.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0589/files/dirukajadililewomepudizuz.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_off00006223.bin
4c13d00a16e0951c08bb45a7fd26c74b671338365475b9ad257203f65b360934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6223 4868 bytes
font_01_sfnt_off000072b9.bin
3342e48e93cc5cb5bd9b8d1e32a8a845bb35a2c8c7bca7e6c1ea10d186a9a191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B9 10260 bytes
font_02_sfnt_off000095bc.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95BC 4324 bytes

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