Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba378fd5a3575b7…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 07:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 454a916165355966c36be8a98275d5de SHA-1: e83fa8c677b318b7648ac45bbd44e63b1976bf12 SHA-256: 9ba378fd5a3575b747608c09566f8b24ba9f5f04ac5cfa554a1e43e31a17e476
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=blood+type+chart+pdf`. It also contains a heuristic for a PDF link farm, with numerous links to external PDFs hosted on Shopify and other domains. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for a blood type chart. The primary intent is to redirect the user 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.com/pify?keyword=blood+type+chart+pdf
    • http://guwobiza.accessdriverrehab.com/uploads/1/3/1/1/131164250/veriboxoxixem.pdf
    • http://files.pmuasia.com/uploads/1/3/1/3/131379678/xupipif.pdf
    • http://files.paddleboardhouse.com/uploads/1/3/1/4/131453588/pidib.pdf
    • http://juvitig.ashi-marwaha.com/uploads/1/3/1/4/131438437/meziliba.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/zeroxufuba.pdf
    • https://cdn.shopify.com/s/files/1/0445/5255/2612/files/definition_of_sustainable_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/9464868250.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0659/files/kircher_oedipus_aegyptiacus_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/lupukapisega.pdf
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/microsoft_office_professional_plus_2019_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/wuwimosatixe.pdf
    • https://cdn.shopify.com/s/files/1/0448/6758/4162/files/tmux_create_new_window.pdf
    • https://cdn.shopify.com/s/files/1/0447/7625/9735/files/dimensionamento_na_administrao_pblica_federal.pdf
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/jonesokalebakefu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/wanubupew.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9097/files/49542754420.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa1.bin
b57f5ce5e2a9b67408ac4d0970b0939b0c831cc616fbebb29f6fff92beede1a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA1 4848 bytes
font_01_sfnt_off00007b40.bin
32a4ed704e4b6d21c5bfdf06faeed5463a91a9f1fe093cf1cfd93c927c9f5878
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B40 10036 bytes
font_02_sfnt_off00009d93.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D93 4324 bytes