Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32660e8e7bfd8b1…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 13:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cb32189b4ef3aca2c152610048b6153 SHA-1: e17176defe27becb42069df7cf899da634e0eef3 SHA-256: d32660e8e7bfd8b1f46822da554bae90595a52cb98f27ce2d637951ffecb7798
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, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, https://ttraff.ru/wix?keyword=rubik%2527s+cube+snake+patterns, is flagged as a malicious redirector. The document body appears to be corrupted or obfuscated, preventing a clear understanding of its intended lure, but the link structure strongly suggests a traffic-driving or phishing attempt.

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/wix?keyword=rubik%2527s+cube+snake+patterns
    • https://static.usrfiles.com/ugd/764aaa_ee81a62d85d14a73be4cd677cc71a7ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_b64d46ce3954450886785b334430eb50.pdf
    • https://static.usrfiles.com/ugd/b88e3d_3c152172c8274476ba3aece8f90f2d55.pdf
    • https://static.usrfiles.com/ugd/8b97dd_338737451488495d82bc77d936e53026.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/wunamapesemepal.pdf
    • https://cdn.shopify.com/s/files/1/0433/5534/0954/files/ap_ssc_memo_2006.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72645751706.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/fotopaxojerumemiv.pdf
    • https://static.usrfiles.com/ugd/1f2646_71b567beec31463d8bfe0bfa604bd81f.pdf
    • https://static.usrfiles.com/ugd/f09a9d_f5b203bc02dd46cb813e6216b7e1f2c4.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_off00005e59.bin
8ba7c9bf7532a9265ae9f5eb54e064ad61c15beab6ce207f3638ccb7b8a3cb0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E59 5140 bytes
font_01_sfnt_off00006ff2.bin
c34cf00a00c7dfad3cdd5038c7dfe6d80ec2024840d6216bec07b41cbd4b1a8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF2 10292 bytes

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