Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9f3ba33162ee2b…

MALICIOUS

PDF

36.8 KB Created: 2020-08-02 10:54:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48745c5ce9dd730d10fa31c526b426be SHA-1: ddff64a722781276c53f519e38a99b1750c3eda1 SHA-256: 1f9f3ba33162ee2bde0f5797039a0f13bb49671b5b76e1eb800c59d0f4076a25
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 'https://ttraff.cc/pify?keyword=read+a+file+in+c%252B%252B'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0434/3257/5132/files/maligun.pdf' being the first identified. These indicators suggest the primary purpose is to lure users to malicious infrastructure.

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=read+a+file+in+c%252B%252B
    • http://files.midmichiganfamilyfun.com/uploads/1/3/1/0/131071315/siworozukid.pdf
    • http://files.maplegrovemusicaltheatre.com/uploads/1/3/1/0/131070845/bogufus_kugevodopu.pdf
    • http://files.wecvacations.com/uploads/1/3/2/6/132682723/dofosozuwexeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/maligun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0755/7275/files/xexujubosevedirozise.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/75944097161.pdf
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/rilagikikupusekawaxegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/85973850349.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/biseradal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/gomaloterakizapun.pdf
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/vitivowobefanilubokup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/rutelobelejumibajip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0607/4780/files/mobonezarafutefidus.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_off0000541e.bin
0a4106a9d605f132b89ba9599f8fe7e7c698fc3d5f4a50ce6a29d51c06983253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x541E 4748 bytes
font_01_sfnt_off00006462.bin
448ec2a3c0abaec06a28d983511a8385a396878b64843f06767bab1ba45c3f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6462 10096 bytes

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