Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b76a1a5e51614c0…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 21:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7566a4ef4505973adcdd881c483206e4 SHA-1: 6c926f68ca81c6eb4bc007f0ea46d61e715f5a74 SHA-256: 8b76a1a5e51614c05ac2cf56aed6095a02dac9c293e948e78e989a13c7df4d75
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to download further content. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to attract search engine traffic and potentially trick users into downloading malicious files disguised as legitimate documents.

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=archicad+22+tutorial+pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/70213266474.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/wuluke.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/pabivivotosiwalugukumixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/kalabhairava_ashtakam_lyrics_in_english.pdf
    • https://static.usrfiles.com/ugd/c20ea7_5be07303ff9d421196033a029e8bb884.pdf
    • https://static.usrfiles.com/ugd/b8c837_708fe6c2d1b544dd839c8f4c871f41a5.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/wordpress_disable_comments.pdf
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/netop.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_off00005b48.bin
d2a8ab12a7ab4a08619fa6e2277a646aee026759c454023ba19d63912e090009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B48 5184 bytes
font_01_sfnt_off00006cee.bin
a4d57ab56c5a3b8e4f8e084acf80dfd66e23ee1da97c602a407198765e9cb6ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEE 10084 bytes

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