Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc9dad4ac9153c0…

MALICIOUS

PDF

42.5 KB Created: 2020-08-02 14:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff3c6e095dacfedf0919cb13d3916999 SHA-1: 6c4ca0101274b61458445c552d687742699d8e1c SHA-256: 1cc9dad4ac9153c052e2afc350d29eb72346b5bad194946014ba053aa1353dba
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify and other domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=load+json+file+javascript'. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The sheer volume of links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=load+json+file+javascript
    • http://files.stephaniebershyoga.com/uploads/1/3/1/3/131379371/1049198.pdf
    • http://files.cresteducator.com/uploads/1/3/1/4/131453268/85fa31f.pdf
    • http://files.villa-bacchus.net/uploads/1/3/2/6/132681452/ac1765d.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/pibaxikexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6464/0159/files/juruwadujamitokotulofak.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/sasopubazetimawag.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/j_allen_chassis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/89330620463.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/14623663289.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9308/files/two_s_complement_to_decimal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0524/7647/files/77933125228.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/70719875779.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/44608672185.pdf
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/rirofovawubarumeruvukanur.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/jodanekiwigefizobokuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/86082984221.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/fufiruvosigevoduxot.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_off00006858.bin
1a3f3db06c57fcc77820ca87bbcec644752ffb51307ff4731d923e3a6921cba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6858 5228 bytes
font_01_sfnt_off00007a46.bin
52d74cf0f421566d558bcaef448d043b5e9c158acbf3aeaa3c0ff9a1ce86de6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 10212 bytes

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