Malicious PDF — malware analysis report

Static analysis result for SHA-256 23bc5313709bad57…

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 20:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de34d3a8778aa5343182da856c1dc8d SHA-1: a2e7ce42e84a62500267212b23e7ebd9f862ce0e SHA-256: 23bc5313709bad57520d1bf193dbb1ad0f7ec30ce0681c680e0d58630171b77d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=list+of+countries+and+capitals+pdf+download', is designed to look like a legitimate download link but redirects to malicious sites. Another heuristic indicates a PDF link farm, with multiple links pointing to Shopify domains, one of which is also listed as an IOC. 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.com/pify?keyword=list+of+countries+and+capitals+pdf+download
    • http://files.sabatinomangini.com/uploads/1/3/0/8/130874042/bisevan.pdf
    • http://files.wendybauer.com/uploads/1/3/0/7/130776462/xafojig_ranamuj_razigulilof_rejude.pdf
    • http://files.movingmemorycompany.com/uploads/1/3/0/7/130738673/259850.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/30220942767.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/81547504478.pdf
    • https://cdn.shopify.com/s/files/1/0439/1511/6696/files/wokapisuragona.pdf
    • http://files.herb-and-dew.square.site/uploads/1/3/1/8/131871597/5075157.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/64349212686.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/nujujakipifipexemajedopi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4836/2399/files/bofufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1448/0287/files/fusiluromokumutogelutija.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/romiket.pdf
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/48313463279.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/zidamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/6538641700.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/71597452004.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/
    • https://cdn.shopify.com/s/files/1/0433

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007847.bin
d929dc9ec2f889dca616ff90511463590d89c6742ac94c7deeac74abe3d68853
pdf-font-stream PDF embedded font (sfnt) at offset 0x7847 5064 bytes
font_01_sfnt_off00008999.bin
186195818d2f583b5eb344afbe83c96c7b8cc85a9b4ed6189f4e00c0a1f8c4d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8999 13812 bytes