Malicious PDF — malware analysis report

Static analysis result for SHA-256 f713d7d016f5d6c4…

MALICIOUS

PDF

43.0 KB Created: 2020-08-31 23:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 787a0c7ba3bf5902d575e88640426238 SHA-1: 2993424d222f884c85932f883377feacacdde9f9 SHA-256: f713d7d016f5d6c49dbb7b25e4f169d5dccd5284138dc1c2d8c53374747bc8ff
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.cc/wix?keyword=bones+season+6+episode+22' leads to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external PDF links, suggesting a coordinated effort to drive traffic to potentially harmful sites. 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.cc/wix?keyword=bones+season+6+episode+22
    • https://static.usrfiles.com/ugd/b8c837_adbd0af643e044f780a6adb97b53f8f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2eb49c687ef45a28f29cbe42912ab83.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_54e34a8e922f4bc19ef415690061c3a8.pdf
    • https://static.usrfiles.com/ugd/0a052f_68813a90d2d9457899a4aaad2f2ed7bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_50ade0f8fe3248478fa39ed689e70985.pdf
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/36995015993.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/90403179767.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/how_to_delete_all_tweets.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/63441199039.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/bemuligipesewixufasotad.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/89645342590.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/breatheology_stig_avall_severinsen.pdf
    • https://static.usrfiles.com/ugd/04e6f9_788d8b16984342959b45b28daed44aa7.pdf
    • https://static.usrfiles.com/ugd/362633_51cedfb995b648009fc206b6518a2a34.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2dc94cbac1740c5a09c1362aa8ed58d.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_off00006ac3.bin
3481a1241f9ffd373f51dc1e02e7a9c0ab0241cca805bc3794258e2908c1e9a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC3 5160 bytes
font_01_sfnt_off00007c65.bin
6672a96ecbe04f66ce69a46c64714631e47b226d18911d645b838cd5caaaa85a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C65 10192 bytes

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