Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6ef48c846126db…

MALICIOUS

PDF

69.5 KB Created: 2020-07-28 23:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7fcf06115bc4340a94e7d6e4fa60440 SHA-1: 38a43645aa2f96d43d4f50136f19f00c749ccb8f SHA-256: 4d6ef48c846126db38634a71a08a1a7166b150f4f6514c43904941d097df095d
148 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple external links. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), and another noted a large number of external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to 'cad block car free' and includes metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content. The presence of embedded JS and the malicious redirector link strongly suggest an attempt to lead the user to a phishing or malware distribution site.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=cad+block+car+free
    • http://files.lauriesdance.com/uploads/1/3/1/8/131856105/wotevim-fawejinumiliv.pdf
    • http://files.kentuckymoversandmakers.com/uploads/1/3/1/6/131606951/2531926.pdf
    • http://files.mayfieldvocalmusic.org/uploads/1/3/1/4/131437246/1e916d7.pdf
    • http://files.kimwattspsychic.com/uploads/1/3/1/3/131384098/dd730305cc49ab.pdf
    • http://files.midcenturymomern.com/uploads/1/3/0/8/130813458/66ab6007948817.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/73507921769.pdf
    • https://cdn.shopify.com/s/files/1/0436/7020/8662/files/lulapo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/49192449837.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/76338237063.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/gijapedipemotonufemej.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/risipabexab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/mofilozudekomenolobamofoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/44331996461.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2597/files/49963122759.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/39424967906.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/kujafid.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_off0000d566.bin
9e2fcd0d0a7e44820e6c8f0a96871516d1fbed005447d5dc9e7cae5a63da339a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD566 4616 bytes
font_01_sfnt_off0000e52a.bin
64f5168b1411337ea344246f0eb62dc8c1a538b00eb6e082de317a9d9575cff2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE52A 10736 bytes