Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e956575b8fc9a7…

MALICIOUS

PDF

38.2 KB Created: 2020-08-23 20:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c244162514bc8f8018add18b6cdb68f SHA-1: 369078a2c4cca7aa0bfc13716c4fb61bcb4ee235 SHA-256: c1e956575b8fc9a74cd597c202873b4880dfcd1c5408de97a14df20936c12aaf
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=huntington+beach+surf+report+swellinfo'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site. 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/pify?keyword=huntington+beach+surf+report+swellinfo
    • http://files.glencoeflorist.co.uk/uploads/1/3/1/8/131856276/nigijulozivedup.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/16837474718.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/9892807137.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/65267607057.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/95773397894.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/66414248562.pdf
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/ribiliduw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/43725787356.pdf
    • https://cdn.shopify.com/s/files/1/0432/8177/6795/files/66090651138.pdf
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/vusifufuzo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/merezotuwekig.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/69001164089.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/50779559251.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_off00005786.bin
e9b76ce69baf7b4641d8ea22b6ee4e024b39c083cd89649811865ef744059ddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5786 5468 bytes
font_01_sfnt_off00006a2a.bin
8bb11e13076137147ddb3beb67823076e29b6244dbbe4c69949a34269ff8f256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2A 9864 bytes

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