Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bcdcef7a814bd6…

MALICIOUS

PDF

42.8 KB Created: 2020-07-10 00:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6108b428c45ce0199da5b433e411f0b7 SHA-1: 322e81fc9a9070e58af80c8000a753a05d6dd6a0 SHA-256: 95bcdcef7a814bd6966ad2cee501d9a1a627cc720896bf0945c6b31f2300dbcb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary redirector URL is https://ttraff.cc/wb?keyword=manual%20hot%20foil%20printing%20machine, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or SEO spam campaign designed to drive traffic to malicious 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/wb?keyword=manual%20hot%20foil%20printing%20machine
    • http://files.marquettecd.com/uploads/1/3/1/6/131636728/5634f4.pdf
    • http://files.mobilecitynz.net/uploads/1/3/1/8/131871829/0b894734.pdf
    • http://files.justbcosmetics.com/uploads/1/3/1/6/131636665/7188013.pdf
    • http://files.asacottrelldar.org/uploads/1/3/1/3/131398066/29d3d713096556f.pdf
    • http://files.matthewarcher.net/uploads/1/3/1/6/131607777/5af999d85ea.pdf
    • http://files.agentcprojects.com/uploads/1/3/1/8/131872015/sekujojo.pdf
    • http://files.thorntongreg.com/uploads/1/3/1/1/131163851/luxijapiduv.pdf
    • http://files.getitwright.com/uploads/1/3/0/7/130776788/pufim-fafopunatobi.pdf
    • http://files.kmphotographyma.com/uploads/1/3/1/4/131407165/1126974.pdf
    • https://takipeximon.files.wordpress.com/2020/06/91154443232.pdf
    • https://guvobazub.files.wordpress.com/2020/06/14807647318.pdf
    • https://jilijufupe.files.wordpress.com/2020/07/68153952248.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.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_off00006a05.bin
799184e82939f0710c4cc00815ba4420b8d6c3173d1313efbee70c6371064077		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A05 5140 bytes
font_01_sfnt_off00007b54.bin
58af768646f93043443092a92821a4da0af6300a0bf6e7f73e58f6eadb97f486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B54 10296 bytes

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