Malicious PDF — malware analysis report

Static analysis result for SHA-256 43acc6277e42e8d4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 10:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c6d31516603b072e34d2b3797d0f2d5 SHA-1: 64d6f0f0574dd9f17503a55353dfb1aa7083db89 SHA-256: 43acc6277e42e8d412f6c2f07c7e474a4b55fd09fadf76c7a54974ea79f76c70
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely for SEO manipulation or to obscure the malicious redirector. 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/wix?keyword=professional+cooking+wayne+gisslen+pdf
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/nikukevagebizotana.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/28657766720.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/wifozezasotifigefarati.pdf
    • https://static.usrfiles.com/ugd/7d21c0_986813e2cb664a25a3299443faff93ea.pdf
    • https://static.usrfiles.com/ugd/9b5f63_c81abd53091240e985b80fa97590dad3.pdf
    • https://static.usrfiles.com/ugd/b8c837_3020995e824d418eba3eec8f8e0e8417.pdf
    • https://static.usrfiles.com/ugd/b8c837_72e95e54bc5c4c459e2277b62b9923cb.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_5fc94258c68e4b02a02838ad4aea3f3c.pdf
    • https://static.usrfiles.com/ugd/e73fea_ee4d660303a64a1b82dd368aaeaed9ce.pdf
    • https://static.usrfiles.com/ugd/963627_7237e74c929f4edb8ff549b85e88e48d.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_off00005d37.bin
78adb4e2b8b3742af88e44728323f06c097b0a55bbc6bbde29c76bb0503455d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D37 5584 bytes
font_01_sfnt_off0000705c.bin
6f29ee5dd0fc12c7f37c3196913912fdf64e8ea77d7112da93ce07bd920a79bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 9960 bytes

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