Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c7fb07ef7bfc57…

MALICIOUS

PDF

42.1 KB Created: 2020-08-22 16:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 698f6ae45200db2ade2dcd08f8328ba7 SHA-1: df8e5d2cbbed1d0dbb41cf8854afe80a493bb67a SHA-256: 48c7fb07ef7bfc579922121e063b353cb543353097487be18efc4b92d4fa5adb
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to 'fire emblem three houses guide lost items' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm heuristic further indicates malicious intent to distribute links to potentially harmful 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=fire+emblem+three+houses+guide+lost+items
    • http://fujotobuw.risacromer.net/uploads/1/3/0/7/130775162/ba8fe572376c.pdf
    • http://witan.mobilhicksville.com/uploads/1/3/2/7/132712109/abb19.pdf
    • http://files.riversendfarm.com/uploads/1/3/1/3/131398497/wejomop.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/10159393957.pdf
    • https://cdn.shopify.com/s/files/1/0440/2819/9062/files/45390285998.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/8909603388.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/32436754784.pdf
    • https://cdn.shopify.com/s/files/1/0448/3589/7505/files/gta_4_mod_menu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4457/5131/files/72398931834.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/tuwov.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/java_jre_6_update_45.pdf
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/certificate_of_completion_ojt_free.pdf
    • https://cdn.shopify.com/s/files/1/0465/1774/7870/files/michael_bakunin.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/52068534422.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_off000067a8.bin
8d3394b36f2f797c240b73662f5a55f335c376c5c1687cfbec34797ce2669ae0
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A8 5124 bytes
font_01_sfnt_off000078e7.bin
fdce3400bea84fe5ca835e0a1c23797249b90e7cdd40afb4e1b94f37762bf138
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E7 10060 bytes